cmake: qi_create_idl: Fix missing quote.
cmake: qi_create_idl: Fix missing quote.

Change-Id: Ia65c37afcd9c30d869de095ad1173d0b95a0a189
Reviewed-on: http://gerrit.aldebaran.lan:8080/18697
Reviewed-by: cgestes <ddb78fe00abb42f91254c16a0860e38eb0781789@aldebaran-robotics.com>
Reviewed-by: mnottale <e3ccf1b6558404e921a21fa09cebb1153b50ec36@aldebaran-robotics.com>
Tested-by: mnottale <e3ccf1b6558404e921a21fa09cebb1153b50ec36@aldebaran-robotics.com>

aldebaran/libqi,aldebaran/libqi,bsautron/libqi,vbarbaresi/libqi,aldebaran/libqi