media: pixfmt*.rst: replace a two dots by a comma

On several tables, the color sample location table preamble is
written as:
	Color Sample Location..
Instead of:
	Color Sample Location:

I suspect that the repetition of such pattern was due to some
copy-and-paste (or perhaps some error during DocBook conversion).

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

Documentation/media/uapi/v4l/pixfmt-m420.rst

@@ -66,7 +66,7 @@ Each cell is one byte.
       - Cr\ :sub:`11`
 
 
-**Color Sample Location..**
+**Color Sample Location:**
 
 
 

Documentation/media/uapi/v4l/pixfmt-nv12.rst

@@ -71,7 +71,7 @@ Each cell is one byte.
       - Cr\ :sub:`11`
 
 
-**Color Sample Location..**
+**Color Sample Location:**
 
 .. flat-table::
     :header-rows:  0

Documentation/media/uapi/v4l/pixfmt-nv12m.rst

@@ -83,7 +83,7 @@ Each cell is one byte.
       - Cr\ :sub:`11`
 
 
-**Color Sample Location..**
+**Color Sample Location:**
 
 
 

Documentation/media/uapi/v4l/pixfmt-nv16.rst

@@ -79,7 +79,7 @@ Each cell is one byte.
       - Cr\ :sub:`31`
 
 
-**Color Sample Location..**
+**Color Sample Location:**
 
 
 

Documentation/media/uapi/v4l/pixfmt-nv16m.rst

@@ -83,7 +83,7 @@ Each cell is one byte.
       - Cr\ :sub:`32`
 
 
-**Color Sample Location..**
+**Color Sample Location:**
 
 
 

Documentation/media/uapi/v4l/pixfmt-uyvy.rst

@@ -65,7 +65,7 @@ Each cell is one byte.
       - Y'\ :sub:`33`
 
 
-**Color Sample Location..**
+**Color Sample Location:**
 
 
 

Documentation/media/uapi/v4l/pixfmt-vyuy.rst

@@ -65,7 +65,7 @@ Each cell is one byte.
       - Y'\ :sub:`33`
 
 
-**Color Sample Location..**
+**Color Sample Location:**
 
 .. flat-table::
     :header-rows:  0

Documentation/media/uapi/v4l/pixfmt-y41p.rst

@@ -88,7 +88,7 @@ Each cell is one byte.
       - Y'\ :sub:`37`
 
 
-**Color Sample Location..**
+**Color Sample Location:**
 
 .. flat-table::
     :header-rows:  0

Documentation/media/uapi/v4l/pixfmt-yuv410.rst

@@ -67,7 +67,7 @@ Each cell is one byte.
       - Cb\ :sub:`00`
 
 
-**Color Sample Location..**
+**Color Sample Location:**
 
 
 

Documentation/media/uapi/v4l/pixfmt-yuv411p.rst

@@ -75,7 +75,7 @@ Each cell is one byte.
       - Cr\ :sub:`30`
 
 
-**Color Sample Location..**
+**Color Sample Location:**
 
 
 

Documentation/media/uapi/v4l/pixfmt-yuv420.rst

@@ -76,7 +76,7 @@ Each cell is one byte.
       - Cb\ :sub:`11`
 
 
-**Color Sample Location..**
+**Color Sample Location:**
 
 
 

Documentation/media/uapi/v4l/pixfmt-yuv420m.rst

@@ -85,7 +85,7 @@ Each cell is one byte.
       - Cr\ :sub:`11`
 
 
-**Color Sample Location..**
+**Color Sample Location:**
 
 
 

Documentation/media/uapi/v4l/pixfmt-yuv422m.rst

@@ -96,7 +96,7 @@ Each cell is one byte.
       - Cr\ :sub:`31`
 
 
-**Color Sample Location..**
+**Color Sample Location:**
 
 
 

Documentation/media/uapi/v4l/pixfmt-yuv422p.rst

@@ -84,7 +84,7 @@ Each cell is one byte.
       - Cr\ :sub:`31`
 
 
-**Color Sample Location..**
+**Color Sample Location:**
 
 
 

Documentation/media/uapi/v4l/pixfmt-yuv444m.rst

@@ -106,7 +106,7 @@ Each cell is one byte.
       - Cr\ :sub:`33`
 
 
-**Color Sample Location..**
+**Color Sample Location:**
 
 
 

Documentation/media/uapi/v4l/pixfmt-yuyv.rst

@@ -68,7 +68,7 @@ Each cell is one byte.
       - Cr\ :sub:`31`
 
 
-**Color Sample Location..**
+**Color Sample Location:**
 
 
 

Documentation/media/uapi/v4l/pixfmt-yvyu.rst

@@ -65,7 +65,7 @@ Each cell is one byte.
       - Cb\ :sub:`31`
 
 
-**Color Sample Location..**
+**Color Sample Location:**
 
 .. flat-table::
     :header-rows:  0