[feat](README.md): Add examples of ng-milkdown components and mention…

… milkdown website

[fix](component movement): Move code from tool-bar.component.ts to top-bar.component.ts

src/app/components/README.md

@@ -1,5 +1,8 @@
 ## Example ng-milkdown components.
 
+Following are some examples of ng-milkdown components, they are all based on [milkdown](https://milkdown.dev)
+
+- copilot
 - footnote:
   - footnote-def
   - footnote-ref
@@ -22,4 +25,3 @@
 - list-item
 - math-block
 - top-bar
-- collab

src/app/components/tool-bar.component.ts → src/app/components/top-bar.component.ts

@@ -59,7 +59,7 @@ import {CopilotService} from "./copilot/copilot.service";
   ],
   standalone: true
 })
-export class ToolBarComponent {
+export class TopBarComponent {
   @Input() provider: NgMilkdownProvider;
 
   constructor(private copilotService: CopilotService) {