Update Contributing to the Code.rst

documentation/source/readme/Contributing to the Code.rst

@@ -9,7 +9,7 @@ Code Style
 Develop, review, and test code following the OpenHarmony coding standards. Make sure code is written in the same style.
 
 * `C++ Coding Style Guide <https://git.ostc-eu.org/docs/developer-guide/-/blob/master/documentation/source/readme/C++%20Coding%20Style%20Guide.rst>`_
-* C Coding Style Guide
+* `C Coding Style Guide <https://git.ostc-eu.org/docs/developer-guide/-/blob/master/documentation/source/readme/C%20Coding%20Style%20Guide.rst>`_
 * JavaScript Coding Style Guide
 * Python Coding Style Guide