Fix screen linebreaks

[tomschr]

Searches for <screen> tags in DocBook files and replace misplaced linebreaks.

Tested scenarios:

• Linebreak between <screen> and text
• Linebreak between <screen> and entity.
• Linebreak between <screen> and <prompt>, <replaceable>

Testing

1. Update/clone this repo.

2. Switch to the fix-screen branch.

3. Change directory to your doc repository.

4. Create an alias and replace the PATH_TO_YOUR_DAPS_REPO with the correct value:

   $ alias fix-screen="PATH_TO_YOUR_DAPS_REPO/python-scripts/fix-screen/bin/fix-screen.py
   

5. Run:

   $ fix-screen xml/YOUR_XML_FILE.xml
   

6. Check the diff.