message: docs(readme): Clarify the goal of building the manual
diff: @@ -28,7 +28,7 @@ yet to be written into the specification.
  [The Ion manual online](https://doc.redox-os.org/ion-manual/html)
  is generated automatically on each commit via [mdBook](https://github.com/azerupi/mdBook) and hosted on Redox OS's website.
  -**Building the manual**
  +**Building the manual for local reference**
  Sources for the manual are located in the `manual` directory.
  