Issue template tweaks (#4520)

* MOAR issue templates

* ...LESS issue templates

* minor issue template tweaks

.github/ISSUE_TEMPLATE/Bug_report.md

@@ -5,7 +5,9 @@ about: Report an issue you're experiencing
 ---
 
 <!---
-Thanks for filing a bug report 😄 ! Before you submit, please read the following:
+  Thanks for filing a bug report! 😄
+
+  Before you submit, please read the following:
 
   If you're here to report a security issue, please STOP writing an issue and
   contact us at security@swagger.io instead!
@@ -16,12 +18,11 @@ Issues on GitHub are only related to problems of Swagger-UI itself. We'll try
   to offer support here for your use case, but we can't offer help with projects
   that use Swagger-UI indirectly, like Springfox or swagger-node.
 
-Likewise, we can't accept bugs in the Swagger/OpenAPIspecifications themselves,
-or anything that violates the specifications.
-
+  Likewise, we can't accept bugs in the Swagger/OpenAPI specifications
+  themselves, or anything that violates the specifications.
 -->
 
-## Q&A (please complete the following information)
+### Q&A (please complete the following information)
  - OS: [e.g. macOS]
  - Browser: [e.g. chrome, safari]
  - Version: [e.g. 22]

.github/ISSUE_TEMPLATE/Feature_request.md

@@ -4,7 +4,7 @@ about: Suggest an new feature or enhancement for this project
 
 ---
 
-## Q&A (please complete the following information)
+### Q&A (please complete the following information)
  - OS: [e.g. macOS]
  - Browser: [e.g. chrome, safari]
  - Version: [e.g. 22]