feat(activitylog): improve documentation

Co-authored-by: Christian Richter <1058116+dragonchaser@users.noreply.github.com>

services/activitylog/README.md

@@ -4,7 +4,7 @@ The `activitylog` service is responsible for storing events (activities) per res
 
 ## The Log Service Ecosystem
 
-Log services like the `activitylog`, `userlog`, `clientlog` and `sse` are responsible for composing notifications for a certain audience.
+Log services like the `activitylog`, `userlog`, `clientlog` and `sse` are responsible for composing notifications for a specific audience.
   -   The `userlog` service translates and adjusts messages to be human readable.
   -   The `clientlog` service composes machine readable messages, so clients can act without the need to query the server.
   -   The `sse` service is only responsible for sending these messages. It does not care about their form or language.