Fix references to old branches

Summary

These docs refer to 4.11 which was released 20 years ago.

• https://docs.rtems.org/branches/master/user/installation/developer.html

We should fix this to use replaceables which should stay accurate for the commandlines even though the screen output may be wrong it will at least be a little closer.

Note the documentation itself needs to be fixed as well.

Steps to reproduce

Try to follow the documentation.

Pre-set options