add hint in Share placeholder on remote share syntax

core/js/share.js

@@ -391,8 +391,13 @@ OC.Share={
 				}
 			});
 
+			var sharePlaceholder = t('core', 'Share with users or groups …');
+			if(oc_appconfig.core.remoteShareAllowed) {
+				sharePlaceholder = t('core', 'Share with users, groups or remote (user@domain) …');
+			}
+
 			html += '<label for="shareWith" class="hidden-visually">'+t('core', 'Share')+'</label>';
-			html += '<input id="shareWith" type="text" placeholder="'+t('core', 'Share with user or group …')+'" />';
+			html += '<input id="shareWith" type="text" placeholder="' + sharePlaceholder + '" />';
 			html += '<span class="shareWithLoading icon-loading-small hidden"></span>';
 			html += '<ul id="shareWithList">';
 			html += '</ul>';