docs: add warning inro define

Author: wibus-wee

docs/.vitepress/config.ts

@@ -29,7 +29,7 @@ export default defineConfig({
       '/': [
         {
           text: 'Getting Started', items: [{
-            text: 'Introduction',
+            text: 'What is Jwc?',
             link: '/guide/what-is-jwc',
           }, {
             text: 'Quick Start',

docs/components/defining.md

@@ -64,6 +64,10 @@ export class App extends JwcComponent {
 /* ... */
 ```
 
+::: warning
+Although you can define a component without using the `@JwcComponent` decorator, it is not recommended. We won't use that in our documentation.
+:::
+
 
 ## Function Based <Badge text="Not yet implemented" type="danger"/>