Update issue templates for documentation requests

Author: greg-1-anderson

.github/ISSUE_TEMPLATE/bug-report-or-support-request.md

@@ -1,7 +1,6 @@
 ---
 name: Bug report or support request
-about: For support requests, please use Drupal Answers
-  instead. See http://drupal.stackexchange.com/questions/tagged/drush
+about: For support requests, please use Drupal Answers instead. See http://drupal.stackexchange.com/questions/tagged/drush
 
 ---
 

.github/ISSUE_TEMPLATE/documentation-request.md

@@ -0,0 +1,19 @@
+---
+name: Documentation request
+about: If you know what the documentation change should be, please consider submitting
+  a pull request instead. If you do know where the documentation you need is, please
+  submit a support request first.
+
+---
+
+**Existing document**
+Please provide a link to the existing document that is unclear or incomplete.
+
+**What are you attempting to do**
+Please explain the task you are attempting to accomplish.
+
+**In what way is the existing documentation unclear or incomplete**
+Please explain any confusion or ambiguities in the existing documentation.
+
+**What should the documentation say instead?**
+To the best of your ability, explain what additional information would allow you to complete your task. If you already know what the documentation should say, please consider submitting a documentation pull request instead.