fix spelling in main directory

Signed-off-by: Dong Xu Wang <wdongxu@linux.vnet.ibm.com>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
diff --git a/qemu-io.c b/qemu-io.c
index de26422..f70de0b 100644
--- a/qemu-io.c
+++ b/qemu-io.c
@@ -445,7 +445,7 @@
     }
 
     if ((pattern_count < 0) || (pattern_count + pattern_offset > count))  {
-        printf("pattern verfication range exceeds end of read data\n");
+        printf("pattern verification range exceeds end of read data\n");
         return 0;
     }