Update git submodules

* Update docs/submodules/dcaegen2.git from branch 'master'
  to 47e2053949bf4a490733fbe1ae2dfc5d65436c1d
  - Merge "Update css file name in conf.py"
  - 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: I2bbb525350252c28e8f6cab9848c504d7bbae630
    
1 file changed