chore: update issue template, comment out instructions (#16721)

.github/ISSUE_TEMPLATE/Bug_report.md

@@ -4,29 +4,39 @@ about: Create a report to help us improve Electron
 
 ---
 
-* Output of `node_modules/.bin/electron --version`:
-* Operating System (Platform and Version):
-* Output of `node_modules/.bin/electron --version` on last known working Electron version (if applicable):
+* **Electron Version** (output of `node_modules/.bin/electron --version`):
+  * <!-- e.g. 4.0.3 -->
+* **Operating System** (Platform and Version):
+  * <!-- e.g. macOS 10.13.6 / Windows 10 (1803) / Ubuntu 18.04 x64 -->
+* **Last known working Electron version** (if applicable):
+  * <!-- e.g. 3.1.0 -->
 
-**Expected Behavior**
-A clear and concise description of what you expected to happen.
+### Expected Behavior
+<!-- A clear and concise description of what you expected to happen. -->
 
-**Actual behavior**
-A clear and concise description of what actually happened.
+### Actual behavior
+<!-- A clear and concise description of what actually happened. -->
 
-**To Reproduce**
+### To Reproduce
+<!--
 Your best chance of getting this bug looked at quickly is to provide a REPOSITORY that can be cloned and run.
+-->
 
+<!--
 You can fork [electron-quick-start](https://github.com/electron/electron-quick-start) and include a link to the branch with your changes.
+-->
 
+<!--
 If you provide a URL, please list the commands required to clone/setup/run your repo e.g.
 ```sh
 $ git clone $YOUR_URL -b $BRANCH
 $ npm install
 $ npm start || electron .
 ```
-**Screenshots**
-If applicable, add screenshots to help explain your problem.
+-->
 
-**Additional Information**
-Add any other context about the problem here.
+### Screenshots
+<!-- If applicable, add screenshots to help explain your problem. -->
+
+### Additional Information
+<!-- Add any other context about the problem here. -->