let's try this

.github/workflows/build.yml

@@ -25,10 +25,9 @@ jobs:
       - name: Increment value
         uses: yoichiro/gh-action-increment-value@main
         with:
-          target_directory: ''
           target_file: 'gradle.properties'
           prefix: 'mod_version='
-          suffix: ''
+          suffix: '# The group ID for the mod. It is only important when publishing as an artifact to a Maven repository.'
           commit_message: 'Incremented the build number to '
       - name: Nuke Changelog dot txt
         uses: DamianReeves/write-file-action@master