gaufre: open service links in a new window

thanks @MarcWadai for the heads up

website/src/components/GaufrePage.astro

@@ -258,7 +258,8 @@ const { services } = Astro.props
                       ) : null}
                     </div>
                     <a
-                      target="_parent"
+                      target="_blank"
+                      title={`${name} - nouvelle fenêtre`}
                       class="lagaufre-service__name"
                       href={url}
                       id={`lagaufre-service-${id}`}