Merge pull request #15252 from grafana/14940-update-checker-docs

docs: fixes #14940

docs/sources/installation/configuration.md

@@ -393,9 +393,7 @@ Analytics ID here. By default this feature is disabled.
 
 ### check_for_updates
 
-Set to false to disable all checks to https://grafana.com for new versions of Grafana and installed plugins. Check is used
-in some UI views to notify that a Grafana or plugin update exists. This option does not cause any auto updates, nor
-send any sensitive information.
+Set to false to disable all checks to https://grafana.com for new versions of installed plugins and to the Grafana GitHub repository to check for a newer version of Grafana. The version information is used in some UI views to notify that a new Grafana update or a plugin update exists. This option does not cause any auto updates, nor send any sensitive information. The check is run every 10 minutes.
 
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