docs(components): add first prop title in usage to be displayed in toc

docs/content/3.components/alert.md

@@ -8,6 +8,8 @@ links:
 
 ## Usage
 
+### Title
+
 Use the `title` prop to set the title of the Alert.
 
 ::component-code

docs/content/3.components/avatar.md

@@ -11,6 +11,8 @@ links:
 
 ## Usage
 
+### Src
+
 Use the `src` prop to set the image URL. You can pass any property from HTML `<img>` element such as `alt`, `loading`, etc.
 
 ::component-code

docs/content/3.components/badge.md

@@ -8,6 +8,8 @@ links:
 
 ## Usage
 
+### Label
+
 Use the default slot to set the label of the Badge.
 
 ::component-code

docs/content/3.components/breadcrumb.md

@@ -8,6 +8,8 @@ links:
 
 ## Usage
 
+### Items
+
 Use the `items` prop as an array of objects with the following properties:
 
 - `label?: string`{lang="ts-type"}

docs/content/3.components/button.md

@@ -8,6 +8,8 @@ links:
 
 ## Usage
 
+### Label
+
 Use the default slot to set the label of the Button.
 
 ::component-code

docs/content/3.components/kbd.md

@@ -11,6 +11,8 @@ navigation:
 
 ## Usage
 
+### Value
+
 Use the default slot to set the value of the Kbd.
 
 ::component-code

docs/content/3.components/tabs.md

@@ -11,6 +11,8 @@ links:
 
 ## Usage
 
+### Items
+
 Use the `items` prop as an array of objects with the following properties:
 
 - `label?: string`{lang="ts-type"}