Adjust template as 'GroupKey' is not what I expected it to be

internal/webhook/handle.go

@@ -11,14 +11,13 @@ import (
 
 const (
 	messageTemplate = "\U0001f6a8" +
-		` **Alerts for group "_{{ .GroupKey }}_":**{{ range .Alerts }}
+		` **New alerts:** @room{{ range .Alerts }}
 ` + "\u2022" + ` {{ if eq .Status "` + StatusResolved + `" }}` + "\u2705" +
 		`{{ else }}{{ with .Labels.severity }}{{ if eq . "critical" }}` + "\U0001f525" +
 		`{{ else if eq . "warning" }}` + "\U0001f4e2" +
 		`{{ else }}` + "\U0001f514" +
 		`{{ end }}{{ else }}` + "\U0001f514" +
-		`{{ end }}{{ end }} {{ .Annotations.description }}{{ end }}
-@room`
+		`{{ end }}{{ end }} {{ .Annotations.description }}{{ end }}`
 )
 
 func (s Server) handleWebhook(w http.ResponseWriter, r *http.Request) {