docs: more instructions in the issue template

Author: nedbat

.github/ISSUE_TEMPLATE/bug_report.md

@@ -16,7 +16,7 @@ How can we reproduce the problem?  Please *be specific*. Don't link to a failing
 1. What version of coverage.py shows the problem? The output of `coverage debug sys` is helpful.
 1. What versions of what packages do you have installed? The output of `pip freeze` is helpful.
 1. What code shows the problem?  Give us a specific commit of a specific repo that we can check out. If you've already worked around the problem, please provide a commit before that fix.
-1. What commands did you run?
+1. What commands should we run to reproduce the problem? *Be specific*. Include everything, even `git clone`, `pip install`, and so on. Explain like we're five!
 
 **Expected behavior**
 A clear and concise description of what you expected to happen.