🔧 fix: missing isHtml import in life cycle (#228)

Author: kravetsone

docs/life-cycle/overview.md

@@ -73,6 +73,7 @@ To use a local hook, you can inline hook into a route handler:
 
 ```typescript
 import { Elysia } from 'elysia'
+import { isHtml } from '@elysiajs/html'
 
 new Elysia()
     .get('/', () => '<h1>Hello World</h1>', {
@@ -93,6 +94,7 @@ To add a global hook, you can use `.on` followed by a life cycle event in camelC
 
 ```typescript
 import { Elysia } from 'elysia'
+import { isHtml } from '@elysiajs/html'
 
 new Elysia()
     .get('/none', () => '<h1>Hello World</h1>')