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/fb/fbcon.txt b/Documentation/fb/fbcon.txt
index f373df1..99ea58e 100644
--- a/Documentation/fb/fbcon.txt
+++ b/Documentation/fb/fbcon.txt
@@ -163,7 +163,7 @@
 unloaded if it is still bound to the console layer. (See
 Documentation/console/console.txt for more information).
 
-This is more complicated in the case of the the framebuffer console (fbcon),
+This is more complicated in the case of the framebuffer console (fbcon),
 because fbcon is an intermediate layer between the console and the drivers:
 
 console ---> fbcon ---> fbdev drivers ---> hardware