Docs(README): Fix mistakes in README (#613)

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> [!IMPORTANT]
> Fixes mistakes in README files by updating provider names, session
chat structures, and document handling functions.
> 
>   - **Provider and API Key Updates**:
> - Change `provider` from `google` to `brave` and update `api_key`
references in `README.md`, `README-CN.md`, and `README-JP.md`.
>   - **Session Chat Structure**:
> - Update `client.sessions.chat` to use `messages` array instead of
`message` string in `README.md`, `README-CN.md`, and `README-JP.md`.
>   - **Document Handling**:
> - Change `client.documents.create` to `client.agents.docs.create` and
`client.documents.search` to `client.agents.docs.search` in `README.md`,
`README-CN.md`, and `README-JP.md`.
> 
> <sup>This description was created by </sup>[<img alt="Ellipsis"
src="https://img.shields.io/badge/Ellipsis-blue?color=175173">](https://www.ellipsis.dev?ref=julep-ai%2Fjulep&utm_source=github&utm_medium=referral)<sup>
for 867ad75. It will automatically
update as commits are pushed.</sup>

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README-CN.md

@@ -596,9 +596,9 @@ client.agents.tools.create(
     name="web_search",
     description="搜索网络以获取信息。",
     integration={
-        "provider": "google",
+        "provider": "brave",
         "method": "search",
-        "setup": {"api_key": "your_google_api_key"},
+        "setup": {"api_key": "your_brave_api_key"},
     },
 )
 ```
@@ -617,7 +617,12 @@ session = client.sessions.create(
 # 在同一会话中继续对话
 response = client.sessions.chat(
     session_id=session.id,
-    message="继续我们之前的对话。"
+    messages=[
+        {
+            "role": "user",
+            "content": "继续我们之前的对话。"
+        }
+    ]
 )
 ```
 
@@ -627,15 +632,16 @@ response = client.sessions.chat(
 
 ```python
 # 上传文档
-document = client.documents.create(
-    file="path/to/document.pdf",
+document = client.agents.docs.create(
+    title="AI advancements",
+    content="AI is changing the world...",
     metadata={"category": "research_paper"}
 )
 
 # 搜索文档
-results = client.documents.search(
-    query="AI 进展",
-    filter={"category": "research_paper"}
+results = client.agents.docs.search(
+    text="AI advancements",
+    metadata_filter={"category": "research_paper"}
 )
 ```
 

README-JP.md

@@ -600,9 +600,9 @@ client.agents.tools.create(
     name="web_search",
     description="Search the web for information.",
     integration={
-        "provider": "google",
+        "provider": "brave",
         "method": "search",
-        "setup": {"api_key": "your_google_api_key"},
+        "setup": {"api_key": "your_brave_api_key"},
     },
 )
 ```
@@ -614,14 +614,19 @@ Julepは、持続的なインタラクションのための強力なセッショ
 ```python
 session = client.sessions.create(
     agent_id=agent.id,
-    user_id="user123",
+    user_id=user.id,
     context_overflow="adaptive"
 )
 
 # 同じセッションで会話を続ける
 response = client.sessions.chat(
     session_id=session.id,
-    message="Follow up on our previous conversation."
+    messages=[
+      {
+        "role": "user",
+        "content": "Follow up on our previous conversation."
+      }
+    ]
 )
 ```
 
@@ -631,15 +636,16 @@ response = client.sessions.chat(
 
 ```python
 # ドキュメントをアップロードする
-document = client.documents.create(
-    file="path/to/document.pdf",
+document = client.agents.docs.create(
+    title="AI advancements",
+    content="AI is changing the world...",
     metadata={"category": "research_paper"}
 )
 
 # ドキュメントを検索する
-results = client.documents.search(
-    query="AI advancements",
-    filter={"category": "research_paper"}
+results = client.agents.docs.search(
+    text="AI advancements",
+    metadata_filter={"category": "research_paper"}
 )
 ```
 

README.md

@@ -791,9 +791,9 @@ client.agents.tools.create(
     name="web_search",
     description="Search the web for information.",
     integration={
-        "provider": "google",
+        "provider": "brave",
         "method": "search",
-        "setup": {"api_key": "your_google_api_key"},
+        "setup": {"api_key": "your_brave_api_key"},
     },
 )
 ```
@@ -805,14 +805,19 @@ Julep provides robust session management for persistent interactions:
 ```python
 session = client.sessions.create(
     agent_id=agent.id,
-    user_id="user123",
+    user_id=user.id,
     context_overflow="adaptive"
 )
 
 # Continue conversation in the same session
 response = client.sessions.chat(
     session_id=session.id,
-    message="Follow up on our previous conversation."
+    messages=[
+      {
+        "role": "user",
+        "content": "Follow up on the previous conversation."
+      }
+    ]
 )
 ```
 
@@ -822,15 +827,15 @@ Easily manage and search through documents for your agents:
 
 ```python
 # Upload a document
-document = client.documents.create(
+document = client.agents.docs.create(
     title="AI advancements",
     content="AI is changing the world...",
     metadata={"category": "research_paper"}
 )
 
 # Search documents
-results = client.documents.search(
-    query="AI advancements",
+results = client.agents.docs.search(
+    text="AI advancements",
     metadata_filter={"category": "research_paper"}
 )
 ```