rb3.rst: Update to move wiki info into this page itself

wiki.linaro.org is sunset; move the relevant information here

Change-Id: Iee4d1c28095c450d8dfeb556130e465e10f6c689
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
1 file changed
tree: 95759f9145024460ca1594f7e332b0130ab57f50
  1. docs/
  2. .gitignore
  3. .readthedocs.yaml