Improvements for spec migration readme
What does this MR do?
Reorders migrations readme file into two sections:
- Testing an ActiveRecord migration
- Testing a non-ActiveRecord migration
Both sections have a spec example.
Does this MR meet the acceptance criteria?
- [-] Changelog entry added, if necessary
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Documentation created/updated via this MR - [-] Tests added for this feature/bug
- [-] Tested in all supported browsers
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Conforms to the code review guidelines -
Conforms to the merge request performance guidelines - [-] Conforms to the style guides
- [-] Conforms to the database guides
- [-] Link to e2e tests MR added if this MR has Requires e2e tests label. See the Test Planning Process.
- [-] Security reports checked/validated by reviewer