Fix print string style

Author: alexisbcc

rest/taskrouter/statistics/workers/realtime/example-1.7.x.py

@@ -13,6 +13,5 @@
 statistics = client.taskrouter.workspaces(workspace_sid) \
     .workers.real_time_statistics().fetch()
 
-print(statistics.activity_statistics[0]['workers']
-      + " in "
-      + statistics.activity_statistics[0]['friendly_name'])
+print(f'{statistics.activity_statistics[0]["workers"]} '
+      f'in {statistics.activity_statistics[0]["friendly_name"]}')