diff --git a/src/strands/models/anthropic.py b/src/strands/models/anthropic.py
index 0d734b762..975fca3e9 100644
--- a/src/strands/models/anthropic.py
+++ b/src/strands/models/anthropic.py
@@ -414,7 +414,7 @@ async def structured_output(
         stop_reason, messages, _, _ = event["stop"]
 
         if stop_reason != "tool_use":
-            raise ValueError(f"Model returned stop_reason: {stop_reason} instead of \"tool_use\".")
+            raise ValueError(f'Model returned stop_reason: {stop_reason} instead of "tool_use".')
 
         content = messages["content"]
         output_response: dict[str, Any] | None = None
diff --git a/src/strands/models/bedrock.py b/src/strands/models/bedrock.py
index 9b36b4244..4ea1453a4 100644
--- a/src/strands/models/bedrock.py
+++ b/src/strands/models/bedrock.py
@@ -631,7 +631,7 @@ async def structured_output(
         stop_reason, messages, _, _ = event["stop"]
 
         if stop_reason != "tool_use":
-            raise ValueError(f"Model returned stop_reason: {stop_reason} instead of \"tool_use\".")
+            raise ValueError(f'Model returned stop_reason: {stop_reason} instead of "tool_use".')
 
         content = messages["content"]
         output_response: dict[str, Any] | None = None
diff --git a/src/strands/session/file_session_manager.py b/src/strands/session/file_session_manager.py
index b32cb00e6..fec2f0761 100644
--- a/src/strands/session/file_session_manager.py
+++ b/src/strands/session/file_session_manager.py
@@ -23,6 +23,7 @@ class FileSessionManager(RepositorySessionManager, SessionRepository):
     """File-based session manager for local filesystem storage.
 
     Creates the following filesystem structure for the session storage:
+    ```bash
     /<sessions_dir>/
     └── session_<session_id>/
         ├── session.json                # Session metadata
@@ -32,7 +33,7 @@ class FileSessionManager(RepositorySessionManager, SessionRepository):
                 └── messages/
                     ├── message_<id1>.json
                     └── message_<id2>.json
-
+    ```
     """
 
     def __init__(self, session_id: str, storage_dir: Optional[str] = None, **kwargs: Any):
diff --git a/src/strands/session/s3_session_manager.py b/src/strands/session/s3_session_manager.py
index 8f8423828..0cc0a68c1 100644
--- a/src/strands/session/s3_session_manager.py
+++ b/src/strands/session/s3_session_manager.py
@@ -24,6 +24,7 @@ class S3SessionManager(RepositorySessionManager, SessionRepository):
     """S3-based session manager for cloud storage.
 
     Creates the following filesystem structure for the session storage:
+    ```bash
     /<sessions_dir>/
     └── session_<session_id>/
         ├── session.json                # Session metadata
@@ -33,7 +34,7 @@ class S3SessionManager(RepositorySessionManager, SessionRepository):
                 └── messages/
                     ├── message_<id1>.json
                     └── message_<id2>.json
-
+    ```
     """
 
     def __init__(