diff --git a/google/cloud/dialogflow_v2/services/participants/async_client.py b/google/cloud/dialogflow_v2/services/participants/async_client.py
index 0b1f43a3b..fd6c31e7b 100644
--- a/google/cloud/dialogflow_v2/services/participants/async_client.py
+++ b/google/cloud/dialogflow_v2/services/participants/async_client.py
@@ -361,7 +361,7 @@ async def list_participants(
         Returns:
             google.cloud.dialogflow_v2.services.participants.pagers.ListParticipantsAsyncPager:
                 The response message for
-                   [Participants.ListParticipants][google.cloud.dialogflow.v2.Participants.ListParticipants].
+                [Participants.ListParticipants][google.cloud.dialogflow.v2.Participants.ListParticipants].
 
                 Iterating over this object will yield results and
                 resolve additional pages automatically.
@@ -542,7 +542,7 @@ async def analyze_content(
         Returns:
             google.cloud.dialogflow_v2.types.AnalyzeContentResponse:
                 The response message for
-                   [Participants.AnalyzeContent][google.cloud.dialogflow.v2.Participants.AnalyzeContent].
+                [Participants.AnalyzeContent][google.cloud.dialogflow.v2.Participants.AnalyzeContent].
 
         """
         # Create or coerce a protobuf request object.
@@ -630,7 +630,7 @@ async def suggest_articles(
         Returns:
             google.cloud.dialogflow_v2.types.SuggestArticlesResponse:
                 The response message for
-                   [Participants.SuggestArticles][google.cloud.dialogflow.v2.Participants.SuggestArticles].
+                [Participants.SuggestArticles][google.cloud.dialogflow.v2.Participants.SuggestArticles].
 
         """
         # Create or coerce a protobuf request object.
@@ -703,7 +703,7 @@ async def suggest_faq_answers(
         Returns:
             google.cloud.dialogflow_v2.types.SuggestFaqAnswersResponse:
                 The request message for
-                   [Participants.SuggestFaqAnswers][google.cloud.dialogflow.v2.Participants.SuggestFaqAnswers].
+                [Participants.SuggestFaqAnswers][google.cloud.dialogflow.v2.Participants.SuggestFaqAnswers].
 
         """
         # Create or coerce a protobuf request object.
diff --git a/google/cloud/dialogflow_v2/services/participants/client.py b/google/cloud/dialogflow_v2/services/participants/client.py
index cf3ab93ed..9b273011a 100644
--- a/google/cloud/dialogflow_v2/services/participants/client.py
+++ b/google/cloud/dialogflow_v2/services/participants/client.py
@@ -606,7 +606,7 @@ def list_participants(
         Returns:
             google.cloud.dialogflow_v2.services.participants.pagers.ListParticipantsPager:
                 The response message for
-                   [Participants.ListParticipants][google.cloud.dialogflow.v2.Participants.ListParticipants].
+                [Participants.ListParticipants][google.cloud.dialogflow.v2.Participants.ListParticipants].
 
                 Iterating over this object will yield results and
                 resolve additional pages automatically.
@@ -787,7 +787,7 @@ def analyze_content(
         Returns:
             google.cloud.dialogflow_v2.types.AnalyzeContentResponse:
                 The response message for
-                   [Participants.AnalyzeContent][google.cloud.dialogflow.v2.Participants.AnalyzeContent].
+                [Participants.AnalyzeContent][google.cloud.dialogflow.v2.Participants.AnalyzeContent].
 
         """
         # Create or coerce a protobuf request object.
@@ -866,7 +866,7 @@ def suggest_articles(
         Returns:
             google.cloud.dialogflow_v2.types.SuggestArticlesResponse:
                 The response message for
-                   [Participants.SuggestArticles][google.cloud.dialogflow.v2.Participants.SuggestArticles].
+                [Participants.SuggestArticles][google.cloud.dialogflow.v2.Participants.SuggestArticles].
 
         """
         # Create or coerce a protobuf request object.
@@ -939,7 +939,7 @@ def suggest_faq_answers(
         Returns:
             google.cloud.dialogflow_v2.types.SuggestFaqAnswersResponse:
                 The request message for
-                   [Participants.SuggestFaqAnswers][google.cloud.dialogflow.v2.Participants.SuggestFaqAnswers].
+                [Participants.SuggestFaqAnswers][google.cloud.dialogflow.v2.Participants.SuggestFaqAnswers].
 
         """
         # Create or coerce a protobuf request object.
diff --git a/google/cloud/dialogflow_v2/types/audio_config.py b/google/cloud/dialogflow_v2/types/audio_config.py
index d3204c5ef..410a95640 100644
--- a/google/cloud/dialogflow_v2/types/audio_config.py
+++ b/google/cloud/dialogflow_v2/types/audio_config.py
@@ -364,13 +364,15 @@ class SpeechToTextConfig(proto.Message):
 
     Attributes:
         speech_model_variant (google.cloud.dialogflow_v2.types.SpeechModelVariant):
-            Optional. The speech model used in speech to text.
+            The speech model used in speech to text.
             ``SPEECH_MODEL_VARIANT_UNSPECIFIED``, ``USE_BEST_AVAILABLE``
             will be treated as ``USE_ENHANCED``. It can be overridden in
             [AnalyzeContentRequest][google.cloud.dialogflow.v2.AnalyzeContentRequest]
             and
             [StreamingAnalyzeContentRequest][google.cloud.dialogflow.v2.StreamingAnalyzeContentRequest]
-            request.
+            request. If enhanced model variant is specified and an
+            enhanced version of the specified model for the language
+            does not exist, then it would emit an error.
     """
 
     speech_model_variant = proto.Field(proto.ENUM, number=1, enum="SpeechModelVariant",)
diff --git a/google/cloud/dialogflow_v2/types/participant.py b/google/cloud/dialogflow_v2/types/participant.py
index 5b29ba6b2..dcb45a340 100644
--- a/google/cloud/dialogflow_v2/types/participant.py
+++ b/google/cloud/dialogflow_v2/types/participant.py
@@ -729,8 +729,17 @@ class AssistQueryParameters(proto.Message):
             comma. For example, filters to match all documents that have
             'US' or 'CA' in their market metadata values and 'agent' in
             their user metadata values will be
-            documents_metadata_filters { key: "market" value: "US,CA" }
-            documents_metadata_filters { key: "user" value: "agent" }
+
+            ::
+
+               documents_metadata_filters {
+                 key: "market"
+                 value: "US,CA"
+               }
+               documents_metadata_filters {
+                 key: "user"
+                 value: "agent"
+               }
     """
 
     documents_metadata_filters = proto.MapField(proto.STRING, proto.STRING, number=1,)