.codecov.yml: Exclude commands for manual testing.

.codecov.yml

@@ -16,6 +16,9 @@ ignore:
   - "pkg/prog/progtest"
   - "pkg/store/storetest"
   - "pkg/must"
+  # Exclude commands for manual testing.
+  - "pkg/cli/examples"
+  - "pkg/md/mdrun"
   # Exclude files generated by stringer.
   - "pkg/getopt/zstring.go"
   - "pkg/md/zstring.go"