chore: fix some comments (#4092)

Signed-off-by: avoidalone <[email protected]>

protoc-gen-openapiv2/defs.bzl

@@ -1,6 +1,6 @@
 """Generated an open-api spec for a grpc api spec.
 
-Reads the the api spec in protobuf format and generate an open-api spec.
+Reads the api spec in protobuf format and generate an open-api spec.
 Optionally applies settings from the grpc-service configuration.
 """
 
@@ -37,7 +37,7 @@ def _direct_source_infos(proto_info, provided_sources = []):
         local_offset = offset
         if src.root.path and not source_root.startswith(src.root.path):
             # Before Bazel 1.0, `proto_source_root` wasn't guaranteed to be a
-            # prefix of `src.path`. This could happend, e.g., if `file` was
+            # prefix of `src.path`. This could happened, e.g., if `file` was
             # generated (https://github.com/bazelbuild/bazel/issues/9215).
             local_offset += len(src.root.path) + 1  # + '/'.
         infos.append(struct(file = src, import_path = src.path[local_offset:]))