[media] doc-rst: improve display of notes and warnings

There are several notes and warning mesages in the middle of
the media docbook. Use the ReST tags for that, as it makes
them visually better and hightlights them.

While here, modify a few ones to make them clearer.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

1 files changed, 8 insertions, 6 deletions

diff --git a/Documentation/media/uapi/v4l/vidioc-g-modulator.rst b/Documentation/media/uapi/v4l/vidioc-g-modulator.rst
index 05d83610bdc5..a2e8c73f0678 100644
--- a/Documentation/media/uapi/v4l/vidioc-g-modulator.rst
+++ b/Documentation/media/uapi/v4l/vidioc-g-modulator.rst
@@ -128,12 +128,14 @@ To change the radio frequency the
 
        -  With this field applications can determine how audio sub-carriers
 	  shall be modulated. It contains a set of flags as defined in
-	  :ref:`modulator-txsubchans`. Note the tuner ``rxsubchans`` flags
-	  are reused, but the semantics are different. Video output devices
-	  are assumed to have an analog or PCM audio input with 1-3
-	  channels. The ``txsubchans`` flags select one or more channels for
-	  modulation, together with some audio subprogram indicator, for
-	  example a stereo pilot tone.
+	  :ref:`modulator-txsubchans`.
+
+	  .. note:: The tuner ``rxsubchans`` flags  are reused, but the
+	     semantics are different. Video output devices
+	     are assumed to have an analog or PCM audio input with 1-3
+	     channels. The ``txsubchans`` flags select one or more channels
+	     for modulation, together with some audio subprogram indicator,
+	     for example, a stereo pilot tone.
 
     -  .. row 7