Update route-maps-about.md

update link

Author: cfields475

articles/virtual-wan/route-maps-about.md

@@ -54,7 +54,7 @@ Before using Route-maps, take into consideration the following limitations:
 
 * During Preview, hubs that are using Route-maps must be deployed in their own virtual WANs.
 * When using Route-maps to summarize a set of routes, the hub router strips the *BGP Community* and *AS-PATH* attributes from those routes. This applies to both inbound and outbound routes.
-* When using Route-maps, [do not use private ASNs for AS prpending](/expressroute/expressroute-optimize-routing.md#Solution:useASPATHprepending).
+* When using Route-maps, [do not use private ASNs for AS prpending](../expressroute/expressroute-optimize-routing.md).
 * When using Route-maps, do not use ASN's reserved by Azure for AS prepending:
   * Public ASNs: 8074, 8075, 12076
   * Private ASNs: 65515, 65517, 65518, 65519, 65520