Added documentation issue template

.github/ISSUE_TEMPLATE/5--documentation.md

@@ -0,0 +1,18 @@
+---
+name: 5. Documentation
+about: I have something to improve or add to the docs
+title: ''
+labels: documentation
+assignees: ''
+
+---
+
+**Describe your changes**
+A clear and concise description of what you like to add or change.
+
+**Location**
+Where should these changes be made or the information published?
+Wiki, README, ...
+
+**Additional context**
+Add any other context about your proposal.