style: readme optimize (#83)

Co-authored-by: YongGit <1013588891@qq.com>

Author: inhiblab

README.md

@@ -54,8 +54,11 @@ It will be exposed to global as `VueHooks_Plus`
 
 ```typescript
 import { useRequest } from 'vue-hooks-plus'
+```
+
+Introduced on demand
 
-// or Introduced on demand
+```typescript
 import useRequest from 'vue-hooks-plus/es/useRequest'
 ```
 

README.zh-CN.md

@@ -54,8 +54,11 @@ npm i vue-hooks-plus
 
 ```typescript
 import { useRequest } from 'vue-hooks-plus'
+```
+
+按需加载
 
-// or 按需引入
+```typescript
 import useRequest from 'vue-hooks-plus/es/useRequest'
 ```
 

packages/hooks/README.md

@@ -54,8 +54,11 @@ It will be exposed to global as `VueHooks_Plus`
 
 ```typescript
 import { useRequest } from 'vue-hooks-plus'
+```
+
+Introduced on demand
 
-// or Introduced on demand
+```typescript
 import useRequest from 'vue-hooks-plus/es/useRequest'
 ```