chore: tweak issue template

Author: yyx990803

.github/issue_template.md

@@ -7,4 +7,6 @@ If reporting a bug, please make sure to provide the following:
 - Browser version
 - Is this a global or local install?
 - Which package manager did you use for the install?
+
+And, the best would be providing a reproduction repository. That takes guessing work out of the way and saves us time.
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