Improve markdown docs formatting for consistency and readability

docs/docs/tools/help.md

@@ -1,13 +1,16 @@
 ## Overview
+
 The `help` tool provides a list of all the available tools and their descriptions.
 For Qodo Merge users, it also enables to trigger each tool by checking the relevant box.
 
 It can be invoked manually by commenting on any PR:
+
 ```
 /help
 ```
 
 ## Example usage
+
 An example [result](https://github.com/Codium-ai/pr-agent/pull/546#issuecomment-1868524805):
 
 ![Help 1](https://codium.ai/images/pr_agent/help1.png){width=750}