Update update-directorymd.yml

Author: DenizAltunkapan

.github/workflows/update-directorymd.yml

@@ -16,10 +16,10 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Run Directory Tree Generator
-        uses: DenizAltunkapan/directory-tree-generator@v1.1
+        uses: DenizAltunkapan/directory-tree-generator@v2
         with:
           path: src
-          extensions: .
+          extensions: .java
           show-extensions: false
 
       - name: Commit and Push DIRECTORY.md