Update Template Cleanup workflow test to avoid running it on forks

.github/workflows/template-cleanup.yml

@@ -14,7 +14,7 @@ jobs:
   template-cleanup:
     name: Template Cleanup
     runs-on: ubuntu-latest
-    if: github.repository != 'JetBrains/intellij-platform-plugin-template'
+    if: github.event.repository.name != 'intellij-platform-plugin-template'
     steps:
 
       # Check out current repository

CHANGELOG.md

@@ -5,6 +5,7 @@
 ## [Unreleased]
 ### Fixed
 - Remove vendor website from `plugin.xml`
+- Update Template Cleanup workflow test to avoid running it on forks
 
 ## [0.2.0]
 ### Added