Fix typo in README.md (#974)

README.md

@@ -169,7 +169,7 @@ Prometheus uses file watches and all changes to the json file are applied immedi
 | is-cluster              | REDIS_EXPORTER_IS_CLUSTER              | Whether this is a redis cluster (Enable this if you need to fetch key level data on a Redis Cluster).                                                                                                                                                                                                                                                                                                                                                                                                                                             |
 | export-client-list      | REDIS_EXPORTER_EXPORT_CLIENT_LIST      | Whether to scrape Client List specific metrics, defaults to false.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
 | export-client-port      | REDIS_EXPORTER_EXPORT_CLIENT_PORT      | Whether to include the client's port when exporting the client list. Warning: including the port increases the number of metrics generated and will make your Prometheus server take up more memory                                                                                                                                                                                                                                                                                                                                               |
-| skip-tls-verification   | REDIS_EXPORTER_SKIP_TLS_VERIFICATION   | Whether to to skip TLS verification when the exporter connects to a Redis instance                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
+| skip-tls-verification   | REDIS_EXPORTER_SKIP_TLS_VERIFICATION   | Whether to skip TLS verification when the exporter connects to a Redis instance                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
 | tls-client-key-file     | REDIS_EXPORTER_TLS_CLIENT_KEY_FILE     | Name of the client key file (including full path) if the server requires TLS client authentication                                                                                                                                                                                                                                                                                                                                                                                                                                                |
 | tls-client-cert-file    | REDIS_EXPORTER_TLS_CLIENT_CERT_FILE    | Name the client cert file (including full path) if the server requires TLS client authentication                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
 | tls-server-key-file     | REDIS_EXPORTER_TLS_SERVER_KEY_FILE     | Name of the server key file (including full path) if the web interface and telemetry should use TLS                                                                                                                                                                                                                                                                                                                                                                                                                                               |