[Doc]: fix issue template (#8966)

Author: RangiLyu

.github/ISSUE_TEMPLATE/1-bug-report.yml

@@ -50,7 +50,7 @@ body:
     attributes:
       label: Environment
       description: |
-        Please run `python mmedit/utils/collect_env.py` to collect necessary environment information and paste it here.
+        Please run `python mmdet/utils/collect_env.py` to collect necessary environment information and paste it here.
         You may add addition that may be helpful for locating the problem, such as
           - How you installed PyTorch \[e.g., pip, conda, source\]
           - Other environment variables that may be related (such as `$PATH`, `$LD_LIBRARY_PATH`, `$PYTHONPATH`, etc.)