Fixing typo in config-settings.rst
Fixing typo in config-settings.rst

Entering "tls" in the config file will cause running mattermost to fail with the message "Invalid value for webserver connection security.".
However, "TLS" works and will correctly configure mattermost to run with HTTPS.
funkyfuture/docs,funkyfuture/docs,funkyfuture/docs,funkyfuture/docs