fix: minor changes

Author: priyansh4320

website/docs/user-guide/getting-started/Getting-Started.mdx

@@ -171,3 +171,5 @@ If you like our project, please give it a [star](https://github.com/ag2ai/ag2) o
   height="30"
   title="GitHub"
 ></iframe>
+
+</content>

website/snippets/python-examples/sequentialchat.mdx

@@ -63,19 +63,19 @@ chat_results = teacher.initiate_chats(
     [
         {
             "recipient": lesson_curriculum,
-            "message": "Let's create a science lesson, what's a good topic?",
+            "message":[{"content": "Let's create a science lesson, what's a good topic?", "role": "user"}], # type: Ignore
             "max_turns": 1,
             "summary_method": "last_msg",
         },
         {
             "recipient": lesson_planner,
-            "message": "Create a lesson plan.",
+            "message":[{"content" :"Create a lesson plan.","role":"user"}], # type: Ignore
             "max_turns": 2, # One revision
             "summary_method": "last_msg",
         },
         {
             "recipient": lesson_formatter,
-            "message": "Format the lesson plan.",
+            "message": [{"content":"Format the lesson plan.","role":"user"}], # type: Ignore
             "max_turns": 1,
             "summary_method": "last_msg",
         },

website/snippets/python-examples/swarmgroupchat.mdx

@@ -50,7 +50,7 @@ teacher = ConversableAgent(
 result, _, _ = initiate_swarm_chat(
     initial_agent=teacher,
     agents=[lesson_planner, lesson_reviewer, teacher],
-    messages="Today, let's introduce our kids to the solar system.",
+    messages=[{"content":"Today, let's introduce our kids to the solar system.","role":"user"}], # type: Ignore
     max_rounds=10,
     swarm_manager_args={"llm_config": llm_config},
     after_work=AfterWorkOption.SWARM_MANAGER