fix typo

Author: CodeShellDev

docs/integrations/compatibility.md

@@ -18,7 +18,7 @@ But with one flaw:
 > _manual configuration_
 
 In order for Secured Signal API to be compatible and integratable with a service you still need to manually define [**Field Mappings**](../configuration/field-mappings)
-and [**Message Templates**](../configuration/message-templates), which is quite easy,
+and [**Message Templates**](../configuration/message-template), which is quite easy,
 provided you know what the services is using as payload (try sending a request to some debugging endpoint).
 
 > _Now wouldn't it be great if someone had already done that?_