media: Documentation: st-vgxy61: Remove quotes around 'No HDR' identifier

Signed-off-by: Benjamin Mugnier <benjamin.mugnier@foss.st.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

Documentation/userspace-api/media/drivers/st-vgxy61.rst

@@ -21,5 +21,5 @@ The ST VGXY61 driver implements the following controls:
     * - HDR substraction
       - This involves subtracting the short exposure frame from the long
         exposure frame.
-    * - "No HDR"
+    * - No HDR
       - This mode is used for standard dynamic range (SDR) exposures.