feat: link to p5.js issues

Author: 3ru

.github/ISSUE_TEMPLATE/config.yml

@@ -1,6 +1,9 @@
 blank_issues_enabled: false
 
 contact_links:
+  - name: 🌸 p5.js Issues
+    url: https://github.com/processing/p5.js/issues
+    about: Report issues with the p5.js here.
   - name: 🖥️ Web Editor Issues
     url: https://github.com/processing/p5.js-web-editor/issues
     about: Report issues with the p5.js web editor here.