Update "Bug Report" template (MarlinFirmware#19906)

Author: sjasonsmith

.github/ISSUE_TEMPLATE/bug_report.md

@@ -9,35 +9,51 @@ assignees: ''
 
 <!--
 
-Have you read Marlin's Code of Conduct? By filing an Issue, you are expected to comply with it, including treating everyone with respect: https://github.com/MarlinFirmware/Marlin/blob/master/.github/code_of_conduct.md
+Please follow the instructions below. Failure to do so may result in your issue being closed.
 
-Do you want to ask a question? Are you looking for support? Please don't post here. Instead please use one of the support links at https://github.com/MarlinFirmware/Marlin/issues/new/choose
+### Before Reporting a Bug
 
-Before filing an issue be sure to test the "bugfix" branches to see whether the issue has been resolved.
+1. Test with the `bugfix-2.0.x` branch to see whether the issue still exists.
+
+2. Get troubleshooting help from the Marlin community to confirm it's a bug and not just a configuration error. Links at https://github.com/MarlinFirmware/Marlin/issues/new/choose
+
+### Instructions
+
+1. Fill out every section of the template below.
+
+2. Always attach configuration files, regardless of whether you think they are involved.
+
+3. Read and understand Marlin's Code of Conduct. By filing an Issue, you are expected to comply with it, including treating everyone with respect: https://github.com/MarlinFirmware/Marlin/blob/master/.github/code_of_conduct.md
 
 -->
 
 ### Bug Description
 
-<!-- Description of the bug -->
+<!-- Describe the bug in this section. (You can remove this invisible comment.) -->
+
+### Configuration Files
 
-### My Configurations
+**Required:** Include a ZIP file containing `Configuration.h` and `Configuration_adv.h`.
 
-**Required:** Please include a ZIP file containing your `Configuration.h` and `Configuration_adv.h` files.
+If you've made any other modifications describe them in detail here.
 
 ### Steps to Reproduce
 
-<!-- Please describe the steps needed to reproduce the issue -->
+<!-- Describe the steps needed to reproduce the issue. (You can remove this invisible comment.) -->
 
 1. [First Step]
 2. [Second Step]
 3. [and so on...]
 
-**Expected behavior:** [What you expect to happen]
+**Expected behavior:**
+
+<!-- Describe what you expected to happen here. (You can remove this invisible comment.) -->
+
+**Actual behavior:**
 
-**Actual behavior:** [What actually happens]
+<!-- Describe what actually happens here. (You can remove this invisible comment.) -->
 
 #### Additional Information
 
 * Provide pictures or links to videos that clearly demonstrate the issue.
-* See [How Can I Contribute](#how-can-i-contribute) for additional guidelines.
+* See [Contributing to Marlin](https://github.com/MarlinFirmware/Marlin/blob/2.0.x/.github/contributing.md) for additional guidelines.