doc: filesystems : Fix typo in Documentations/filesystems

Correct spelling typo in Documentations/filesystems.

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/Documentation/filesystems/nfs/Exporting b/Documentation/filesystems/nfs/Exporting
index 09994c2..e543b1a 100644
--- a/Documentation/filesystems/nfs/Exporting
+++ b/Documentation/filesystems/nfs/Exporting
@@ -93,7 +93,7 @@
    2/ make sure that d_splice_alias is used rather than d_add
       when ->lookup finds an inode for a given parent and name.
 
-      If inode is NULL, d_splice_alias(inode, dentry) is eqivalent to
+      If inode is NULL, d_splice_alias(inode, dentry) is equivalent to
 
 		d_add(dentry, inode), NULL