Fixed another grey

Signed-off-by: ClemensLinnhoff <clemens.linnhoff@partner.bmw.de>

Author: ClemensLinnhoff

osi_featuredata.proto

@@ -921,7 +921,7 @@ message CameraDetection
         //
         COLOR_BLACK = 2;
 
-        // Shape with grey color.
+        // Shape with gray color.
         //
         COLOR_GREY = 3;