Correction in log massage format syntax

Dictionary key used wrongly as '%(key)' instead of '%(key)s'
while formatting log message.

Change-Id: I2e31bfdac1021ee00bb001283c4f4ea9c273bc4c
Closes-bug: #1619584

cinder/volume/drivers/hpe/hpe_3par_common.py

@@ -593,7 +593,7 @@ class HPE3PARCommon(object):
                 volume_update['status'] = 'deleted'
             except Exception as ex:
                 LOG.error(_LE("There was an error deleting volume %(id)s: "
-                              "%(error)."),
+                              "%(error)s."),
                           {'id': volume.id,
                            'error': six.text_type(ex)})
                 volume_update['status'] = 'error'
@@ -693,7 +693,7 @@ class HPE3PARCommon(object):
                 snapshot_update['status'] = fields.SnapshotStatus.ERROR
             except Exception as ex:
                 LOG.error(_LE("There was an error deleting snapshot %(id)s: "
-                              "%(error)."),
+                              "%(error)s."),
                           {'id': snapshot['id'],
                            'error': six.text_type(ex)})
                 snapshot_update['status'] = fields.SnapshotStatus.ERROR