refactor(SDK): DuplicateToggleValue error message

Author: Bullle

engine/modules/toggle/src/main/resources/view/toggle-module/errors/DuplicateToggleValueError.js

@@ -1,6 +1,6 @@
 export class DuplicateToggleValueError extends Error {
   constructor (toggle, dup, cause) {
-    super('(' + dup.keys.toString() + ') have same value \'' + dup.value + '\' in toggle "' + toggle + '". Avoid those duplicates in your config.js.')
+    super('(' + dup.keys.toString() + ') have the same value \'' + dup.value + '\' in toggle "' + toggle + '". Avoid those duplicates in your config.js.')
     this.toggle = toggle
     this.cause = cause
     this.name = 'DuplicateToggleValueError'