Describe what documentation needs updated or added:
An issue template for crash reports.

Why is this documentation needed:
To allow users to quickly lodge a crash report such that it doesn't get lost in the Discord backscroll.

What medium is best for this documentation:
Issue template with minimum of extra details needed, since those details are included in a crash log.

Example

Find crash reports in minecraft/crash-reports/

Crash Report:

Please place crash report text, in its entirety, here

Description of what you were doing when the crash happened:
Walking around carrying a minecraft:dirt block