Fix typos concerning hierarchy

        heirarchical, hierachical -> hierarchical
        heirarchy, hierachy -> hierarchy

Signed-off-by: Uwe Kleine-König <zeisberg@informatik.uni-freiburg.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
diff --git a/fs/cifs/README b/fs/cifs/README
index 432e515..080c5eb 100644
--- a/fs/cifs/README
+++ b/fs/cifs/README
@@ -1,5 +1,5 @@
 The CIFS VFS support for Linux supports many advanced network filesystem 
-features such as heirarchical dfs like namespace, hardlinks, locking and more.  
+features such as hierarchical dfs like namespace, hardlinks, locking and more.  
 It was designed to comply with the SNIA CIFS Technical Reference (which 
 supersedes the 1992 X/Open SMB Standard) as well as to perform best practice 
 practical interoperability with Windows 2000, Windows XP, Samba and equivalent