doc: fix double words

Fix double words "the the" in various files
within Documentations.

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/Documentation/memory-barriers.txt b/Documentation/memory-barriers.txt
index 102dc19..ddd2e0d 100644
--- a/Documentation/memory-barriers.txt
+++ b/Documentation/memory-barriers.txt
@@ -1371,7 +1371,7 @@
 			process_message(msg);
 	}
 
-     There is nothing to prevent the the compiler from transforming
+     There is nothing to prevent the compiler from transforming
      process_level() to the following, in fact, this might well be a
      win for single-threaded code: