Tests: Fix formatting for manual test procedure

In "Test Case Unit Tests: Browser based unit tests" test case

Author: microbit-carlos

tests/manual/test-procedure.rst

@@ -512,8 +512,9 @@ Test Case A11y: Using a screenreader
 Test Case Unit Tests: Browser based unit tests
 ''''''''''''''''''''''''''''''''''''''''''''''
 This test uses a local clone of the repository.
+
 - Clone the repository version under test and start the local server.
-(see https://github.com/bbcmicrobit/PythonEditor/blob/master/README.rst)
+  (see https://github.com/bbcmicrobit/PythonEditor/blob/master/README.rst)
 - Launch "http://localhost:8000/tests.html" in the browser.
 - [ ] Confirm all tests pass (errors will be marked red).