Fix "appropriate"-typo

docs/sources/installation/configuration.md

@@ -132,7 +132,7 @@ Another way is put a webserver like Nginx or Apache in front of Grafana and have
 > **Note** Grafana versions earlier than 3.0 are vulnerable to [POODLE](https://en.wikipedia.org/wiki/POODLE). So we strongly recommend to upgrade to 3.x or use a reverse proxy for ssl termination.
 
 ### socket
-Path where the socket should be created in case of `protocol=socket`. Please make sure that Grafana has appropiate permissions.
+Path where the socket should be created when `protocol=socket`. Please make sure that Grafana has appropriate permissions.
 
 ### domain