doc: spelling error changes

Fixed multiple spelling errors.

Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Carlos E. Garcia <carlos@cgarcia.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/Documentation/filesystems/sharedsubtree.txt b/Documentation/filesystems/sharedsubtree.txt
index 4ede421..32a173d 100644
--- a/Documentation/filesystems/sharedsubtree.txt
+++ b/Documentation/filesystems/sharedsubtree.txt
@@ -727,7 +727,7 @@
 			  mkdir -p /tmp/m3
 			  mount --rbind /root /tmp/m3
 
-			  I wont' draw the tree..but it has 24 vfsmounts
+			  I won't draw the tree..but it has 24 vfsmounts
 
 
 		at step i the number of vfsmounts is V[i] = i*V[i-1].