remove a stale issue

Dependencies

• [2] WKKABOJ6 one issue less
• [3] KKMFQDR4 editing source code from within the app
• [4] D4FEFHQC flesh out Readme
• [5] ZTMRQZSW Readme
• [6] 25V2GA6J taking stock
• [*] FS2ITYYH record a known issue

Change contents

• edit in README.md at line 86
  [3.106]→[3.1119:1120](∅→∅),[3.1120]→[2.33:107](∅→∅)
  −

  − * When editing sources, selecting text is not yet completely implemented.