docs: condense test plan

docs/specs/GRM-173.md

@@ -55,13 +55,11 @@ Historical spec for the colliding task ID:
 
 ## Test Plan
 
-- `template-content` molecule scenario: assert the prune service calls
-  `runner-cleanup.sh`, assert lease filters and keep-images logic render in
-  the cleanup script, assert `capacity:` renders in the runner config.
-- `default` molecule scenario: assert the cleanup script is installed and
-  executable.
-- `bash -n` syntax check on rendered templates during development.
-- `make lint-all`, `make pytest-cov`, fast molecule for the changed role.
+- `template-content` molecule scenario: prune service calls `runner-cleanup.sh`;
+  lease filters, keep-images and `capacity:` render correctly.
+- `default` scenario: cleanup script installed and executable.
+- `bash -n` on rendered templates; `make lint-all`, `make pytest-cov`, fast
+  molecule for the changed role.
 
 ## Deploy Plan