message: README updates, small tweaks to docker instructions
diff: @@ -71,9 +71,9 @@ Optionally, you can use Docker to run the server with pre-built NWNX binaries. R
  `nwnxee/unified` supports the following [tags](https://hub.docker.com/r/nwnxee/unified/tags):
  -* `[commit-hash]` (7 characters and 40)
  +* `[commit-hash]` (7 characters)
  * `latest`
  -* `[tag]` (for example: `build8193`)
  +* `[tag]` (for example: `build8193.20`)
  Due to Docker's local image cache we recommend using the `[commit-hash]` tag to explicitly state which nwnx build to run. In comparison, the `latest` tag will usually hit the image cache and return an outdated build, as you have to run `docker pull nwnxee/unified` to update the `latest` image in your cache. Using the `[commit-hash]` tag removes the need to manually run docker pull on your machines, and enables you to roll back in a simple and sensible manner.
  