fix[plop]: set trim => trim() (PanJiaChen#3254)

notEmpty

Author: qige2016

plop-templates/utils.js

@@ -1,9 +1,2 @@
-exports.notEmpty = name => {
-  return v => {
-    if (!v || v.trim === '') {
-      return `${name} is required`
-    } else {
-      return true
-    }
-  }
-}
+exports.notEmpty = name => v =>
+  !v || v.trim() === '' ? `${name} is required` : true