Add comment blocks to GitHub templates to reduce clutter

.github/ISSUE_TEMPLATE.md

@@ -1,3 +1,4 @@
+<!--
 ## Before you hit that Submit button....
 
 This issue tracker is for problems with the Node-RED runtime, the editor or the core nodes.
@@ -14,6 +15,7 @@ That way the whole Node-RED user community can help, rather than rely on the cor
 ## So you have a real issue to raise...
 
 To help us understand the issue, please fill-in as much of the following information as you can:
+-->
 
 ### What are the steps to reproduce?
 

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,3 +1,4 @@
+<!--
 ## Before you hit that Submit button....
 
 Please read our [contribution guidelines](https://github.com/node-red/node-red/blob/master/CONTRIBUTING.md)
@@ -6,23 +7,26 @@ before submitting a pull-request.
 ## Types of changes
 
 What types of changes does your code introduce?
-_Put an `x` in the boxes that apply_
+Put an `x` in the boxes that apply
+-->
 
 - [ ] Bugfix (non-breaking change which fixes an issue)
 - [ ] New feature (non-breaking change which adds functionality)
 
+<!--
 If you want to raise a pull-request with a new feature, or a refactoring
 of existing code, it **may well get rejected** if it hasn't been discussed on
 the [mailing list](https://groups.google.com/forum/#!forum/node-red) or
 [slack team](https://nodered.org/slack) first.
 
+-->
 
 ## Proposed changes
 
-Describe the nature of this change. What problem does it address?
+<!-- Describe the nature of this change. What problem does it address? -->
 
 ## Checklist
-_Put an `x` in the boxes that apply_
+<!-- Put an `x` in the boxes that apply -->
 
 - [ ] I have read the [contribution guidelines](https://github.com/node-red/node-red/blob/master/CONTRIBUTING.md)
 - [ ] For non-bugfix PRs, I have discussed this change on the mailing list/slack team.