Fixing typo in test_volumes_get.py

The word verification is mispelt in test_volumes_get.py.

Change-Id: I0d7891a5574aa9503f0d5765210a8285c331ffe7
diff --git a/tempest/api/compute/volumes/test_volumes_get.py b/tempest/api/compute/volumes/test_volumes_get.py
index f6fed5b..1ea1d54 100644
--- a/tempest/api/compute/volumes/test_volumes_get.py
+++ b/tempest/api/compute/volumes/test_volumes_get.py
@@ -57,7 +57,7 @@
         # GET Volume
         resp, fetched_volume = self.client.get_volume(volume['id'])
         self.assertEqual(200, resp.status)
-        # Verfication of details of fetched Volume
+        # Verification of details of fetched Volume
         self.assertEqual(v_name,
                          fetched_volume['displayName'],
                          'The fetched Volume is different '