Rename ComboboxExample7.razor to ComboBoxExample7.razor

Author: mckaragoz

ComponentViewer.Docs/Pages/Examples/ComboboxExample7.razor renamed to ComponentViewer.Docs/Pages/Examples/ComboBoxExample7.razor

@@ -76,4 +76,4 @@
         "Texas", "Utah", "Vermont", "Virgin Island", "Virginia",
         "Washington", "West Virginia", "Wisconsin", "Wyoming",
     };
-}
+}