docs: fix code of conduct link in CONTRIBUTING (#1538)

Co-authored-by: Tushar Pagar <240662211+tushardev-365@users.noreply.github.com>

Author: tushardev-365

CONTRIBUTING.md

@@ -4,7 +4,7 @@ We highly appreciate feedback and contributions from the community! If you'd lik
 
 ## Code of conduct
 
-In the interest of fostering an open and welcoming environment, please review and follow our [code of conduct](./CODE_OF_CONDUCT.md).
+In the interest of fostering an open and welcoming environment, please review and follow our [code of conduct](https://github.com/supabase/.github/blob/main/CODE_OF_CONDUCT.md).
 
 ## Code and copy reviews