Make the new bug templates less markup-heavy (python#9438)

- Remove emoji
- Instead of `## H2 headings` just use `**bold**`
- Add link to docs
- Add suggestion for new users not to file a bug

.github/ISSUE_TEMPLATE/bug.md

@@ -1,27 +1,32 @@
 ---
-name: 🐛 Bug Report
+name: Bug Report
 about: Submit a bug report
 labels: "bug"
 ---
 
+<!--
+  If you're new to mypy and you're not sure whether what you're experiencing is a mypy bug, please see the "Question and Help" form
+  instead.
+-->
+
+**Bug Report**
+
 <!--
 Note: If the problem you are reporting is about a specific library function, then the typeshed tracker is better suited
 for this report: https://github.com/python/typeshed/issues
 -->
 
-## 🐛 Bug Report
-
 (A clear and concise description of what the bug is.)
 
-## To Reproduce
+**To Reproduce**
 
 (Write your steps here:)
 
 1. Step 1...
-1. Step 2...
-1. Step 3...
+2. Step 2...
+3. Step 3...
 
-## Expected Behavior
+**Expected Behavior**
 
 <!--
   How did you expect your project to behave?
@@ -31,7 +36,7 @@ for this report: https://github.com/python/typeshed/issues
 
 (Write what you thought would happen.)
 
-## Actual Behavior
+**Actual Behavior**
 
 <!--
   Did something go wrong?
@@ -40,7 +45,7 @@ for this report: https://github.com/python/typeshed/issues
 
 (Write what happened.)
 
-## Your Environment
+**Your Environment**
 
 <!-- Include as many relevant details about the environment you experienced the bug in -->
 

.github/ISSUE_TEMPLATE/documentation.md

@@ -1,9 +1,9 @@
 ---
-name: 📚 Documentation
+name: Documentation
 about: Report a problem with the documentation
 labels: "documentation"
 ---
 
-## 📚 Documentation
+**Documentation**
 
 (A clear and concise description of the issue.)

.github/ISSUE_TEMPLATE/feature.md

@@ -1,13 +1,13 @@
 ---
-name: 🚀 Feature
+name: Feature
 about: Submit a proposal for a new mypy feature
 labels: "feature"
 ---
 
-## 🚀 Feature
+**Feature**
 
 (A clear and concise description of your feature proposal.)
 
-## Pitch
+**Pitch**
 
 (Please explain why this feature should be implemented and how it would be used. Add examples, if applicable.)

.github/ISSUE_TEMPLATE/question.md

@@ -1,14 +1,15 @@
 ---
-name: ❓ Questions and Help
+name: Questions and Help
 about: If you have questions, please check the below links
 labels: "question"
 ---
 
-## ❓ Questions and Help
+**Questions and Help**
 
-### Please note that this issue tracker is not a help form and this issue will be closed.
+_Please note that this issue tracker is not a help form and this issue will be closed._
 
-Please contact us instead.
+Please check here instead:
 
 - [Website](http://www.mypy-lang.org/)
+- [Documentation](https://mypy.readthedocs.io/)
 - [Gitter](https://gitter.im/python/typing)