Update README.md

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src/subscribers/README.md

@@ -22,4 +22,4 @@ A subscriber is defined as a `class` which is registered as a subscriber by invo
 
 The type of event that the subscriber subscribes to is passed as the first parameter to the `eventBusService.subscribe` and the eventhandler is passed as the second parameter. The types of events a service can emmit are described in the individual service.
 
-An eventhandler has one paramenter; a data `object` which contain information relating to the event, including relevant `id's`. The `id` can be used to fetch the appropriate entity in the eventhandler.
+An eventhandler has one parameter; a data `object` which contain information relating to the event, including relevant `id's`. The `id` can be used to fetch the appropriate entity in the eventhandler.