Update the title of the `Controlled BitBreadcrumb` section of the `Breadcrumb` demo page

[msynk]

The current title of this section is too long and not appropriate:

This title should be changed to Events.

The demo file name is BitBreadcrumbDemo.razor in the Bit.BlazorUI.Demo.Client.Core project.

Note: There are three different locations for this change on this demo page.