index.md: Reformat and link references to the two CI systems

Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Change-Id: I8b66a09e97fbaf530f562ec168255b9d143192ac
1 file changed
tree: 50abce6f23955e77edbc014e374224328633c191
  1. docs/
  2. .gitreview
  3. mkdocs.yml
  4. requirements.txt