Fix typo

Author: bendera

src/content/docs/components/badge.mdx

@@ -58,13 +58,13 @@ The following badge styles have been implemented based on the VSCode UI:
   </Fragment>
 </Demo>
 
-## Tab bar counter
+## Tab header counter
 
 <Demo>
-  <vscode-badge variant="activity-bar-counter">42</vscode-badge>
+  <vscode-badge variant="tab-header-counter">42</vscode-badge>
   <Fragment slot="html">
     ```html
-    <vscode-badge variant="tab-bar-counter">42</vscode-badge>
+    <vscode-badge variant="tab-header-counter">42</vscode-badge>
     ```
   </Fragment>
 </Demo>