Update git submodules

* Update docs/submodules/msb/swagger-sdk.git from branch 'master'
  to 290d1647a91aff54d54a41bd6b2aa4ce30324976
  - Update css file name in conf.py
    
    ribbon.css is the correct name of the css file.
    
    Issue-ID: CIMAN-376
    Signed-off-by: Jessica Wagantall <jwagantall@linuxfoundation.org>
    Change-Id: Iac02e0a46c79162393bed46396a5b95dcc8202b7
    
1 file changed