Update issue template with links to doc tutorials (#4573)

* Update issue template with links to doc tutorials

.github/ISSUE_TEMPLATE/bug_report.md

@@ -11,3 +11,9 @@ assignees: ''
 **Issue description:**
 
 **URL to the documentation page:**
+
+If you know how to fix the issue you are reporting please
+consider opening a pull request. We provide a tutorial on
+using git here: https://docs.godotengine.org/en/stable/community/contributing/pr_workflow.html,
+writing documentation at https://docs.godotengine.org/en/stable/community/contributing/docs_writing_guidelines.html
+and contributing to the class reference here: https://docs.godotengine.org/en/stable/community/contributing/updating_the_class_reference.html