Update overview.md (#539)

Fixed broken url to Ten Agent in the documentation.

docs/ten_agent/overview.md

@@ -4,7 +4,7 @@ TEN Agent is a conversational AI agent powered by the TEN, integrating Gemini 2.
 
 ## Links
 
-- [TEN Agent](https://github.com/TEN-framework/ten_agent)
+- [TEN Agent](https://github.com/TEN-framework/TEN-Agent)
 - [TEN Framework](https://github.com/TEN-framework/ten_framework)
 
 ## Architecture
@@ -54,4 +54,4 @@ Once the playground is up and running, users can leverage the module picker to:
 -	Experiment with different AI models, TTS/STT systems, and real-time communication tools.
 -	Test agent behaviors in a safe, interactive environment.
 
-The playground serves as a hub for innovation, empowering developers to explore and fine-tune their AI systems effortlessly.
+The playground serves as a hub for innovation, empowering developers to explore and fine-tune their AI systems effortlessly.