refactor: use ~/ for alias and improve ssg

src/modules/README.md

@@ -3,7 +3,7 @@
 A custom user module system. Place a `.ts` file with the following template, it will be installed automatically.
 
 ```ts
-import { UserModule } from '/~/types'
+import { UserModule } from '~/types'
 
 export const install: UserModule = ({ app, router, isClient }) => {
   // do something

src/modules/i18n.ts

@@ -1,5 +1,5 @@
 import { createI18n } from 'vue-i18n'
-import { UserModule } from '/~/types'
+import { UserModule } from '~/types'
 
 // import i18n resources
 // https://vitejs.dev/guide/features.html#glob-import

src/modules/nprogress.ts

@@ -1,5 +1,5 @@
 import NProgress from 'nprogress'
-import { UserModule } from '/~/types'
+import { UserModule } from '~/types'
 
 export const install: UserModule = ({ isClient, router }) => {
   if (isClient) {