📝 dinglehopper: README-DEV: Massage markdown a bit

README-DEV.md

@@ -1,5 +1,5 @@
-# Testing
-
+Testing
+=======
 Use `pytest` to run the tests in [the tests directory](qurator/dinglehopper/tests):
 ```bash
 virtualenv -p /usr/bin/python3 venv
@@ -9,28 +9,28 @@ pip install -r requirements-dev.txt
 pytest
 ```
 
-### Test running examples
-### Only unit tests
+## Test running examples
+Only unit tests:
 ```bash
 pytest -m "not integration"
 ```
 
-### Only integration tests
+Only integration tests:
 ```bash
 pytest -m integration
 ```
 
-### All tests
+All tests:
 ```bash
 pytest
 ```
 
-### All tests with code coverage
+All tests with code coverage:
 ```bash
 pytest --cov=qurator --cov-report=html
 ```
 
-### Static code analysis
+Static code analysis:
 ```bash
 pytest -k "not test" --flake8
 pytest -k "not test" --mypy