docs: specify multi-word component titles

docs/content/3.forms/4.select-menu.md

@@ -1,4 +1,5 @@
 ---
+title: SelectMenu
 description: Display a select menu with advanced features.
 links:
   - label: GitHub

docs/content/3.forms/9.form-group.md

@@ -1,4 +1,5 @@
 ---
+title: FormGroup
 description: Display a label and additional informations around a form element.
 links:
   - label: GitHub

docs/content/5.navigation/1.vertical-navigation.md

@@ -1,4 +1,5 @@
 ---
+title: VerticalNavigation
 description: Display a vertical navigation.
 links:
   - label: GitHub

docs/content/5.navigation/2.command-palette.md

@@ -1,4 +1,5 @@
 ---
+title: CommandPalette
 description: Add a customizable command palette to your app.
 links:
   - label: GitHub

docs/content/6.overlays/5.context-menu.md

@@ -1,4 +1,5 @@
 ---
+title: ContextMenu
 description: Display a menu that appears on right click.
 links:
   - label: GitHub