libcamera: Remove spaces at end of lines

Spaces at end of lines have cropped up in a few places in libcamera.
Remove them.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Milan Zamazal <mzamazal@redhat.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

src/libcamera/control_ids_core.yaml

@@ -868,8 +868,8 @@ controls:
   - Gamma:
       type: float
       description:  |
-        Specify a fixed gamma value. Default must be 2.2 which closely mimics 
-        sRGB gamma. Note that this is camera gamma, so it is applied as 
+        Specify a fixed gamma value. Default must be 2.2 which closely mimics
+        sRGB gamma. Note that this is camera gamma, so it is applied as
         1.0/gamma.
 
 ...