docs: Fix Docstring formatting for code samples (#492)

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

Author: holtskinner

src/a2a/client/client_factory.py

@@ -41,14 +41,17 @@ class ClientFactory:
     The factory is configured with a `ClientConfig` and optionally a list of
     `Consumer`s to use for all generated `Client`s. The expected use is:
 
-    factory = ClientFactory(config, consumers)
-    # Optionally register custom client implementations
-    factory.register('my_customer_transport', NewCustomTransportClient)
-    # Then with an agent card make a client with additional consumers and
-    # interceptors
-    client = factory.create(card, additional_consumers, interceptors)
-    # Now the client can be used the same regardless of transport and
-    # aligns client config with server capabilities.
+    .. code-block:: python
+
+        factory = ClientFactory(config, consumers)
+        # Optionally register custom client implementations
+        factory.register('my_customer_transport', NewCustomTransportClient)
+        # Then with an agent card make a client with additional consumers and
+        # interceptors
+        client = factory.create(card, additional_consumers, interceptors)
+
+    Now the client can be used consistently regardless of the transport. This
+    aligns the client configuration with the server's capabilities.
     """
 
     def __init__(

src/a2a/server/models.py

@@ -166,15 +166,18 @@ def create_task_model(
         TaskModel class with the specified table name.
 
     Example:
-        # Create a task model with default table name
-        TaskModel = create_task_model()
+        .. code-block:: python
 
-        # Create a task model with custom table name
-        CustomTaskModel = create_task_model('my_tasks')
+            # Create a task model with default table name
+            TaskModel = create_task_model()
 
-        # Use with a custom base
-        from myapp.database import Base as MyBase
-        TaskModel = create_task_model('tasks', MyBase)
+            # Create a task model with custom table name
+            CustomTaskModel = create_task_model('my_tasks')
+
+            # Use with a custom base
+            from myapp.database import Base as MyBase
+
+            TaskModel = create_task_model('tasks', MyBase)
     """
 
     class TaskModel(TaskMixin, base):  # type: ignore