docs: driver-api: media: zoran: replace SOFT HYPHEN character

Replace the occurences of the following character:

	- U+00ad ('­'): SOFT HYPHEN
	  as ASCII HYPHEN is preferred over SOFT HYPHEN

At least with some fonts, a SOFT HYPHEN is displayed as
a blank space.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

Documentation/driver-api/media/drivers/zoran.rst

@@ -319,7 +319,7 @@ Conexant bt866 TV encoder
 ~~~~~~~~~~~~~~~~~~~~~~~~~
 
 - is used in AVS6EYES, and
-- can generate: NTSC/PAL, PAL­M, PAL­N
+- can generate: NTSC/PAL, PAL-M, PAL-N
 
 The adv717x, should be able to produce PAL N. But you find nothing PAL N
 specific in the registers. Seem that you have to reuse a other standard