Fix typo in issue template (#172)

Change "repo" to "repro" for "minimal repro"

Author: laurenyu

.github/issue_template.md

@@ -11,7 +11,7 @@ Please fill out the form below.
 ### Describe the problem
 Describe the problem or feature request clearly here.
 
-### Minimal repo / logs
+### Minimal repro / logs
 Please provide any logs and a bare minimum reproducible test case, as this will be helpful to diagnose the problem. If including tracebacks, please include the full traceback. Large logs and files should be attached.
 
 - **Exact command to reproduce**: