add docs issue template

.github/ISSUE_TEMPLATE/DOCUMENTATION.md

@@ -0,0 +1,14 @@
+---
+name: Documentation
+about: Open an issue to add, change, or otherwise modify any part of the documentation.
+title: "[DOCS]"
+labels: documentation
+assignees: ''
+
+---
+
+## Which Sections Does This Issue Cover?
+[Put sections (e.g. Query Concepts), page links, etc as necessary]
+
+## What Needs To Change?
+What specifically needs to change and what suggestions do you have to change it?