Update git submodules

* Update docs/submodules/dcaegen2.git from branch 'elalto'
  to d9590cb9cf7e8c722e19f49649961fef6531dd2c
  - Correct release note subtitles
    
    Global release note page does not display correctly this DCAE
    Release note due to too many subtitles
    
    Issue-ID: DOC-659
    
    Signed-off-by: Eric Debeau <eric.debeau@orange.com>
    Change-Id: Idff09b7981d40b3a85a8076dc31720bbb76cf914
    
1 file changed