qemu-img: Fix typo

Fixes: d402b6a
Reported-by: Kevin Wolf <kwolf@redhat.com>
Cc: qemu-stable@nongnu.org
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
(cherry picked from commit f099887)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>

qemu-img.c

@@ -261,7 +261,7 @@ static int print_block_option_help(const char *filename, const char *fmt)
             return 1;
         }
         if (!proto_drv->create_opts) {
-            error_report("Protocal driver '%s' does not support image creation",
+            error_report("Protocol driver '%s' does not support image creation",
                          proto_drv->format_name);
             return 1;
         }