Update set_stats.py

<!--- Your description here -->

+label: docsite_pr

lib/ansible/modules/utilities/logic/set_stats.py

@@ -18,7 +18,7 @@ author: "Brian Coca (@bcoca)"
 module: set_stats
 short_description: Set stats for the current ansible run
 description:
-     - This module allows setting/accumulating stats on the current ansible run, either per host of for all hosts in the run.
+     - This module allows setting/accumulating stats on the current ansible run, either per host or for all hosts in the run.
      - This module is also supported for Windows targets.
 options:
   data: