correct a characterization

Dependencies

• [2] F3NPUCCM update stale information
• [3] KQWIMWJ5 deemphasize the terminal in Readme
• [4] CZRMAMSB clearer discription of how to run lines.love
• [5] ZTMRQZSW Readme
• [6] D4FEFHQC flesh out Readme
• [7] PNBKVYZ4 more cogent onboarding instructions
• [*] FS2ITYYH record a known issue

Change contents

• replacement in README.md at line 23
  [3.223]→[2.142:301](∅→∅)
  − By default, lines.love reads/writes the file `lines.txt` in a directory

  − specific to this app (https://love2d.org/wiki/love.filesystem.getSourceBaseDirectory).
  [3.223]

  [3.378]
  + By default, lines.love reads/writes the file `lines.txt` in

  + [a directory relative to this app](https://love2d.org/wiki/love.filesystem.getSourceBaseDirectory).