Add link to coding standard.

CONTRIBUTING.md

@@ -8,8 +8,9 @@ Thank you for your interest in contributing to FSP for RA. This document will he
 - [Feature/Enhancement Requests](#featureenhancement-requests)
 - [Contributing Code](#contributing-code)
   - [Signing Contributor License Agreement](#signing-contributor-license-agreement)
+  - [Coding Standards and Guidelines](#coding-standards-and-guidelines)
   - [Contributing through a Pull Request](#contributing-through-a-pull-request)
-- [Technical support](#technical-support)
+- [Technical Support](#technical-support)
 
 ## Bug Reports
 
@@ -44,6 +45,12 @@ We require community contributors to sign a Contributor License Agreement (CLA).
 
 Ensure a CLA has been signed for your GitHub account by checking the [CLA page](https://cla-assistant.io/renesas/fsp).
 
+### Coding Standards and Guidelines
+
+We ask all code contributions to adhere to the following standards and guidelines:
+
+- [FSP Coding Standard](https://github.com/renesas/fsp-standards/blob/main/fsp-coding-standard.md)
+
 ### Contributing through a Pull Request
 
 We welcome contributions via Github Pull Requests. If you're interested in contributing, please follow these steps: