[PATCH] media: fix Documentation label name

[Ming Qian]

the label name should use dash, not underline

change _V4L2_PIX_FMT_NV12M_8L128 to _V4L2-PIX-FMT-NV12M-8L128
change _V4L2_PIX_FMT_NV12M_10BE_8L128 to _V4L2-PIX-FMT-NV12M-10BE-8L128

Signed-off-by: Ming Qian <ming.qian at nxp.com>
---
 Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst
index 8b2ff1d29639..bd1a962a80a7 100644
--- a/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst
+++ b/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst
@@ -257,8 +257,8 @@ of the luma plane.
 .. _V4L2-PIX-FMT-NV12-4L4:
 .. _V4L2-PIX-FMT-NV12-16L16:
 .. _V4L2-PIX-FMT-NV12-32L32:
-.. _V4L2_PIX_FMT_NV12M_8L128:
-.. _V4L2_PIX_FMT_NV12M_10BE_8L128:
+.. _V4L2-PIX-FMT-NV12M-8L128:
+.. _V4L2-PIX-FMT-NV12M-10BE-8L128:
 
 Tiled NV12
 ----------
-- 
2.33.0