docs: update links in FAQ and index to reflect 'how-tools-work' documentation

Author: hannesrudolph

docs/faq.md

@@ -100,7 +100,7 @@ Use the dropdown menu in the chat input area to select a different mode, or use
 
 ### What are tools and how do I use them?
 
-[Tools](/basic-usage/using-tools) are how Roo Code interacts with your system.  Roo Code automatically selects and uses the appropriate tools to complete your tasks. You don't need to call tools directly. You will be prompted to approve or reject each tool use.
+[Tools](/basic-usage/how-tools-work) are how Roo Code interacts with your system.  Roo Code automatically selects and uses the appropriate tools to complete your tasks. You don't need to call tools directly. You will be prompted to approve or reject each tool use.
 
 ### What are context mentions?
 

docs/index.md

@@ -32,7 +32,7 @@ Roo Code adapts to your needs with specialized [modes](basic-usage/modes):
 - **[Custom Modes](advanced-usage/custom-modes):** Create unlimited specialized personas for security auditing, performance optimization, documentation, or any other task
 
 ### Smart Tools
-Roo Code comes with powerful [tools](basic-usage/using-tools) that can:
+Roo Code comes with powerful [tools](basic-usage/how-tools-work) that can:
 - Read and write files in your project
 - Execute commands in your VS Code terminal
 - Control a web browser