trivial: fix then -> than typos in comments and documentation

- (better, more, bigger ...) then -> (...) than

Signed-off-by: Frederik Schwarzer <schwarzerf@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index b14a8f3..ff0a8f8 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -2717,7 +2717,7 @@
 				paths++;
 			}
 
-			/* Only validate asocmaxrxt if we have more then
+			/* Only validate asocmaxrxt if we have more than
 			 * one path/transport.  We do this because path
 			 * retransmissions are only counted when we have more
 			 * then one path.