media: Documentation: Rename meta format files

Rename meta format files, using "metafmt" prefix instead of "pixfmt-meta".
These are metadata formats, not pixel formats.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Cc: Bingbu Cao <bingbu.cao@intel.com>
Cc: Dafna Hirschfeld <dafna@fastmail.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

Documentation/userspace-api/media/v4l/meta-formats.rst

@@ -12,10 +12,10 @@ These formats are used for the :ref:`metadata` interface only.
 .. toctree::
     :maxdepth: 1
 
-    pixfmt-meta-d4xx
-    pixfmt-meta-intel-ipu3
-    pixfmt-meta-rkisp1
-    pixfmt-meta-uvc
-    pixfmt-meta-vsp1-hgo
-    pixfmt-meta-vsp1-hgt
-    pixfmt-meta-vivid
+    metafmt-d4xx
+    metafmt-intel-ipu3
+    metafmt-rkisp1
+    metafmt-uvc
+    metafmt-vsp1-hgo
+    metafmt-vsp1-hgt
+    metafmt-vivid

MAINTAINERS

@@ -10454,7 +10454,7 @@ L:	linux-media@vger.kernel.org
 S:	Maintained
 F:	Documentation/admin-guide/media/ipu3.rst
 F:	Documentation/admin-guide/media/ipu3_rcb.svg
-F:	Documentation/userspace-api/media/v4l/pixfmt-meta-intel-ipu3.rst
+F:	Documentation/userspace-api/media/v4l/metafmt-intel-ipu3.rst
 F:	drivers/staging/media/ipu3/
 
 INTEL ISHTP ECLITE DRIVER
@@ -18199,7 +18199,7 @@ L:	linux-rockchip@lists.infradead.org
 S:	Maintained
 F:	Documentation/admin-guide/media/rkisp1.rst
 F:	Documentation/devicetree/bindings/media/rockchip-isp1.yaml
-F:	Documentation/userspace-api/media/v4l/pixfmt-meta-rkisp1.rst
+F:	Documentation/userspace-api/media/v4l/metafmt-rkisp1.rst
 F:	drivers/media/platform/rockchip/rkisp1
 F:	include/uapi/linux/rkisp1-config.h