Update multi tenancy guide title (FusionAuth#2753)

* fixed grammar/spelling typo

* Corrected title of multi tenancy guide

astro/src/content/docs/extend/examples/multi-tenant.mdx

@@ -1,5 +1,5 @@
 ---
-title: How to implement multi-tenancy
+title: Multi-tenancy
 description: Learn how to run multiple tenants in a single FusionAuth instance.
 navcategory: developer
 section: extend
@@ -12,8 +12,6 @@ import ScrollRef from 'src/components/ScrollRef.astro';
 import ControlPlaneRegistrationDiagram from 'src/diagrams/docs/extend/examples/_control-plane-registration.astro';
 import DataPlaneLoginDiagram from 'src/diagrams/docs/extend/examples/_data-plane-login.astro';
 
-## Overview
-
 This guide will help you set up multi-tenancy in FusionAuth. Tenants allow for logical separation of users, applications and other objects in FusionAuth. 
 
 ## Why Use Multi-Tenancy