Documentation: remove duplicated words

Remove many duplicated words under Documentation/ and do other small
cleanups.

Examples:
        "and and" --> "and"
        "in in" --> "in"
        "the the" --> "the"
        "the the" --> "to the"
        ...

Signed-off-by: Paolo Ornati <ornati@fastwebnet.it>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
diff --git a/Documentation/video4linux/Zoran b/Documentation/video4linux/Zoran
index 040a2c8..deb218f 100644
--- a/Documentation/video4linux/Zoran
+++ b/Documentation/video4linux/Zoran
@@ -144,7 +144,7 @@
 
 The CCIR defines parameters needed for broadcasting the signal.
 The CCIR has defined different standards: A,B,D,E,F,G,D,H,I,K,K1,L,M,N,...
-The CCIR says not much about about the colorsystem used !!!
+The CCIR says not much about the colorsystem used !!!
 And talking about a colorsystem says not to much about how it is broadcast.
 
 The CCIR standards A,E,F are not used any more.