docs: Document manual update_analytics_counts.

docs/production/mobile-push-notifications.md

@@ -198,6 +198,15 @@ Some of the graphs on your server's [usage statistics
 page](https://zulip.com/help/analytics) can be generated from these
 statistics.
 
+When enabled, usage statistics are submitted via an hourly cron
+job. If you'd like to access plan management immediately after
+enabling `SUBMIT_USAGE_STATISTICS=True` on a pre-8.0 Zulip server, you
+can run the analytics job manually via:
+
+```
+/home/zulip/deployments/current/manage.py update_analytics_counts
+```
+
 Our use of uploaded usage statistics is governed by the same [Terms of
 Service](https://zulip.com/policies/terms) and [Privacy
 Policy](https://zulip.com/policies/privacy) that covers the Mobile

templates/corporate/server_not_uploading_data.html

@@ -32,8 +32,8 @@
             <p>
                 Your Zulip server's administrator can fix this issue by <a
                 href="https://zulip.readthedocs.io/en/stable/production/upgrade.html">upgrading</a>
-                the server to Zulip 8.0+, or enabling the
+                the server to Zulip 8.0+, or <a href="https://zulip.readthedocs.io/en/stable/production/mobile-push-notifications.html#uploading-usage-statistics">enabling the
-                <code>SUBMIT_USAGE_STATISTICS</code> setting.
+                <code>SUBMIT_USAGE_STATISTICS</code> setting</a>.
             </p>
             {% endif %}
         </div>