OO-2635 fix businessgroup email link

src/main/java/org/olat/commons/memberlist/ui/MembersAvatarDisplayRunController.java

@@ -469,7 +469,7 @@ public class MembersAvatarDisplayRunController extends FormBasicController {
 			// Build REST URL to business group,
 			StringBuilder groupLink = new StringBuilder();
 			groupLink.append(Settings.getServerContextPathURI())
-				.append("/auth/BusinessGroup/").append(businessGroup.getKey());
+				.append("/url/BusinessGroup/").append(businessGroup.getKey());
 			return translate("email.body.template", new String[]{groupName, groupLink.toString()});	
 		} else {
 			String courseName = courseEnv.getCourseTitle();

src/main/java/org/olat/commons/memberlist/ui/MembersListDisplayRunController.java

@@ -300,7 +300,7 @@ public class MembersListDisplayRunController extends BasicController {
 			// Build REST URL to business group, use hack via group manager to access
 			StringBuilder groupLink = new StringBuilder();
 			groupLink.append(Settings.getServerContextPathURI())
-				.append("/auth/BusinessGroup/").append(businessGroup.getKey());
+				.append("/url/BusinessGroup/").append(businessGroup.getKey());
 			return translate("email.body.template", new String[]{groupName, groupLink.toString()});	
 		} else {
 			String courseName = courseEnv.getCourseTitle();