tweak wording in test list

Dependencies

• [2] SGMA5JLE save the list of tests in repo
• [3] ZIEFIMPC desired behavior now looks good

Change contents

• replacement in text_tests at line 3
  [2.45]→[2.45:216](∅→∅)
  − This doesn't include all tests and might not change between forks, but it's

  − intended to be the "timeless core" of a text editor widget that shouldn't

  − change across forks.
  [2.45]

  [2.216]
  + This doesn't include all tests. Intended to be the "timeless core" of a text

  + editor widget that shouldn't change across forks.