typo fix

src/myaktion/main.go

@@ -12,7 +12,7 @@ func main() {
 	log.Println("Starting My-Aktion API server")
 	router := mux.NewRouter()
 	router.HandleFunc("/health", handler.Health).Methods("GET")
-	router.HandleFunc("/campagins", handler.CreateCampaign).Methods("POST")
+	router.HandleFunc("/campaigns", handler.CreateCampaign).Methods("POST")
 	if err := http.ListenAndServe(":8000", router); err != nil {
 		log.Fatal(err)
 	}