Add comments to the justfile

Author: Paolo Tranquilli

justfile

@@ -1,7 +1,10 @@
+# Sync generated files (javascript and PR checks)
 sync: build update-pr-checks
 
+# Perform all necessary steps to update the PR checks
 update-pr-checks:
     pr-checks/sync.sh
 
+# Transpile typescript code into javascript
 build:
     npm run build