message: Update readme - stable branch clarification
diff: -# NWNX:EE (build 8193.5 - v79)
  +# NWNX:EE (build 8193.5 - v79 STABLE)
  -- Latest release: [build8193.5](https://github.com/nwnxee/unified/releases/tag/build8193.5) - [Changelog](https://github.com/nwnxee/unified/blob/master/CHANGELOG.md#81935)
  +This branch contains the latest stable build of NWN. It is only current in cases when the [master](https://github.com/nwnxee/unified/tree/master) branch is targeting a development build. If the master branch is targeting a stable build, this branch is one stable build out of date.
  +
  +- Target release: [build8193.5](https://github.com/nwnxee/unified/releases/tag/build8193.5) - [Changelog](https://github.com/nwnxee/unified/blob/nwnx-stable/CHANGELOG.md#81935)
  - Docker tag: `nwnxee/unified:build8193.5`
  - nwserver-linux md5: `b5d9a1a78527fd3f316788713eab1aeb`
  +
  +
  @mainpage
  @tableofcontents
  