rename function to setMembers

src/routes/groups.js

@@ -6,7 +6,7 @@ exports = module.exports = {
     add,
     update,
     remove,
-    updateMembers
+    setMembers
 };
 
 const assert = require('assert'),
@@ -49,7 +49,7 @@ async function update(req, res, next) {
     next(new HttpSuccess(200, { }));
 }
 
-async function updateMembers(req, res, next) {
+async function setMembers(req, res, next) {
     assert.strictEqual(typeof req.params.groupId, 'string');
 
     if (!req.body.userIds) return next(new HttpError(404, 'missing or invalid userIds fields'));