Add missing semicolon and space to the type files (#1146)

types/helpers.d.ts

@@ -5,7 +5,7 @@ type Dictionary<T> = { [key: string]: T };
 type Computed = () => any;
 type MutationMethod = (...args: any[]) => void;
 type ActionMethod = (...args: any[]) => Promise<any>;
-type CustomVue = Vue & Dictionary<any>
+type CustomVue = Vue & Dictionary<any>;
 
 interface Mapper<R> {
   (map: string[]): Dictionary<R>;

types/index.d.ts

@@ -106,8 +106,8 @@ export interface Module<S, R> {
   modules?: ModuleTree<R>;
 }
 
-export interface ModuleOptions{
-  preserveState?: boolean
+export interface ModuleOptions {
+  preserveState?: boolean;
 }
 
 export interface GetterTree<S, R> {