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/fujitsu/frv/mmu-layout.txt b/Documentation/fujitsu/frv/mmu-layout.txt
index 11dcc56..db10250 100644
--- a/Documentation/fujitsu/frv/mmu-layout.txt
+++ b/Documentation/fujitsu/frv/mmu-layout.txt
@@ -233,7 +233,7 @@
      (*) __debug_mmu.iamr[]
      (*) __debug_mmu.damr[]
 
-	 These receive the current IAMR and DAMR contents. These can be viewed with with the _amr
+	 These receive the current IAMR and DAMR contents. These can be viewed with the _amr
 	 GDB macro:
 
 		(gdb) _amr