docs(contributing): change fork link (#15792)

Co-authored-by: Keith Williams <keithwillcode@gmail.com>

CONTRIBUTING.md

@@ -74,7 +74,7 @@ branch are tagged into a release monthly.
 
 To develop locally:
 
-1. [Fork](https://help.github.com/articles/fork-a-repo/) this repository to your
+1. [Fork](https://github.com/calcom/cal.com/fork/) this repository to your
    own GitHub account and then
    [clone](https://help.github.com/articles/cloning-a-repository/) it to your local device.
 2. Create a new branch: