spelling: s/retreive/retrieve/

Signed-off-by: Adrian Bunk <bunk@stusta.de>
diff --git a/Documentation/i2o/ioctl b/Documentation/i2o/ioctl
index 3e17497..1e77fac 100644
--- a/Documentation/i2o/ioctl
+++ b/Documentation/i2o/ioctl
@@ -185,7 +185,7 @@
       ENOMEM      Kernel memory allocation error
 
    A return value of 0 does not mean that the value was actually
-   properly retreived.  The user should check the result list
+   properly retrieved.  The user should check the result list
    to determine the specific status of the transaction.
 
 VIII. Downloading Software