ci: update cert workflow path to variable

Author: ghostrider-05

.github/workflows/certificate.yml

@@ -17,5 +17,5 @@ jobs:
           username: ${{ secrets.SSH_USERNAME }}
           password: ${{ secrets.SSH_PASSWORD }}
           script: |
-            cd ${{ vars.SSH_PROJECT_ROOT }}
-            sh deployment/renewcert.sh
+            cd ${{ vars.SSH_PROJECT_CERT_ROOT }}
+            sh renewcert.sh

README.md

@@ -52,7 +52,7 @@ Read the [contribution][contributing] documentation for guidelines when contribu
 
 ## Certificate Renewal
 
-The certificate is renewed by the `deployment/renewcert.sh` script run using a cron job.
+The certificate is renewed by the [`renewcert`](.github/workflows/certificate.yml) script run using a cron job.
 
 [contributing]: ./CONTRIBUTING.md
 [package.json]: https://github.com/RocketLeagueMapmaking/RL-docs/blob/master/package.json