Update config.yml

Author: SableRaf

.github/ISSUE_TEMPLATE/config.yml

@@ -1,6 +1,6 @@
 blank_issues_enabled: false
 contact_links:
-  - name: 🅿️ Processing 4 Issues
+  - name: 💙 Processing 4 Issues
     url: https://github.com/processing/processing4/issues
     about: Report issues with Processing 4 here.
   - name: 📚 Examples Issues