Update bug report template to ask reporters to disable plugins

Author: Gerrit0

.github/ISSUE_TEMPLATE/bug_report.md

@@ -22,6 +22,8 @@ labels: bug
 Note: Turn off skipErrorChecks before reporting a crash. Bug reports for crashes with that option
 on are out of scope.
 
+Note: Please try to reproduce the issue WITHOUT any plugins enabled before reporting a bug.
+
 If possible, please create a *minimal* repo reproducing your problem.
 If it is more than a single small file, please submit a pull request to
 https://github.com/TypeStrong/typedoc-repros