fix: Use actual computed value for the URL

Signed-off-by: Julius Härtl <jus@bitgrid.net>

Author: juliusknorr

src/modules/sidebar/sections/SidebarIntegration.vue

@@ -77,7 +77,7 @@ export default {
 	 methods: {
 		copyUrl() {
 			if (navigator?.clipboard) {
-				navigator.clipboard.writeText(this.webdavUrl).then(function() {
+				navigator.clipboard.writeText(this.apiEndpointUrl).then(function() {
 					showSuccess(t('files', 'Integration URL copied to clipboard'))
 				}, function(err) {
 					showError(t('files', 'Clipboard is not available'))