issue example changed

Author: prathameshnium

CONTRIBUTING.md

@@ -47,7 +47,7 @@ git pull upstream master
 Then update your feature branch from your local copy of master, and push it!
 
 ```sh
-git checkout 325-add-ac-resistivity-module
+git checkout 101-add-new-instrument
 git rebase master
 git push --force-with-lease origin 325-add-ac-resistivity-module
 ```