Update payload-get.md

Author: JarbasHorst

api-reference/beta/api/payload-get.md

@@ -38,7 +38,7 @@ GET /security/attackSimulation/simulations/{simulationId}/payload
 
 ## Optional query parameters
 
-This method does not currently support the [OData query parameters](/graph/query-parameters) to customize the response.
+This method doesn't currently support the [OData query parameters](/graph/query-parameters) to customize the response.
 
 ## Request headers