Update active-directory-architecture.md

Author: yoelhor

articles/active-directory/fundamentals/active-directory-architecture.md

@@ -88,7 +88,7 @@ Azure AD operates across datacenters with the following characteristics:
 
 * Authentication, Graph, and other AD services reside behind the Gateway service. The Gateway manages load balancing of these services. It will fail over automatically if any unhealthy servers are detected using transactional health probes. Based on these health probes, the Gateway dynamically routes traffic to healthy datacenters.
 * For *reads*, the directory has secondary replicas and corresponding front-end services in an active-active configuration operating in multiple datacenters. In case of a failure of an entire datacenter, traffic will be automatically routed to a different datacenter.
-*For *writes*, the directory will fail over primary (master) replica across datacenters via planned (new primary is synchronized to old primary) or emergency failover procedures. Data durability is achieved by replicating any commit to at least two datacenters.
+* For *writes*, the directory will fail over primary (master) replica across datacenters via planned (new primary is synchronized to old primary) or emergency failover procedures. Data durability is achieved by replicating any commit to at least two datacenters.
 
 #### Data consistency