docs: Fix a broken link in Cline Tools Guide (RooCodeInc#2716)

* docs: Fix the broken link

* Update cline-tools-guide.md

---------

Co-authored-by: Saoud Rizwan <[email protected]>

Author: thara

docs/tools/cline-tools-guide.md

@@ -55,7 +55,7 @@ Cline is your AI assistant that can:
 
 ## Available Tools
 
-For the most up-to-date implementation details, you can view the full source code in the [Cline repository](https://github.com/cline/cline/blob/main/src/core/Cline.ts).
+For the most up-to-date implementation details, you can view the full source code in the [Cline repository](https://github.com/cline/cline/blob/main/src/core/task/index.ts).
 
 Cline has access to the following tools for various tasks: