MAINTAINERS: update dongwoon,dw9807-vcm.yaml reference

Changeset a1f4626 ("media: dt-bindings: Convert Dongwoon dw9807-vcm bindings to json-schema")
renamed: Documentation/devicetree/bindings/media/i2c/dongwoon,dw9807-vcm.txt
to: Documentation/devicetree/bindings/media/i2c/dongwoon,dw9807-vcm.yaml.

Update its cross-reference accordingly.

Fixes: a1f4626 ("media: dt-bindings: Convert Dongwoon dw9807-vcm bindings to json-schema")
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/89f11772dd4afe9700d6cbbb3da8749eb98b396a.1654529011.git.mchehab@kernel.org

Author: mchehab

MAINTAINERS

@@ -6078,7 +6078,7 @@ M:	Sakari Ailus <sakari.ailus@linux.intel.com>
 L:	linux-media@vger.kernel.org
 S:	Maintained
 T:	git git://linuxtv.org/media_tree.git
-F:	Documentation/devicetree/bindings/media/i2c/dongwoon,dw9807-vcm.txt
+F:	Documentation/devicetree/bindings/media/i2c/dongwoon,dw9807-vcm.yaml
 F:	drivers/media/i2c/dw9807-vcm.c
 
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