Fixed file names and refs

Author: vladvino

articles/api-management/TOC.yml

@@ -107,9 +107,9 @@
             - name: Deploy a self-hosted gateway to Kubernetes
               href: how-to-deploy-self-hosted-gateway-kubernetes.md
             - name: Deploy a self-hosted gateway to Docker
-              href: api-management-howto-deploy-self-hosted-gateway-to-docker.md
+              href: how-to-deploy-self-hosted-gateway-docker.md
             - name: Configure custom domain for self-hosted gateway
-              href: api-management-howto-configure-custom-domain-gateway.md            
+              href: api-management-howto-configure-custom-domain-gateway.md
       - name: Cache
         items:
             - name: Add caching to improve performance

articles/api-management/api-management-howto-deploy-self-hosted-gateway-to-docker.md renamed to articles/api-management/how-to-deploy-self-hosted-gateway-docker.md

@@ -78,5 +78,5 @@ When connectivity is restored, each self-hosted gateway affected by the outage w
 ## Next steps
 
 -   [Read a whitepaper for additional background on this topic](https://aka.ms/hybrid-and-multi-cloud-api-management)
--   [Deploy self-hosted gateway to Docker](api-management-howto-deploy-self-hosted-gateway-to-docker.md)
+-   [Deploy self-hosted gateway to Docker](how-to-deploy-self-hosted-gateway-docker.md)
 -   [Deploy self-hosted gateway to Kubernetes](how-to-deploy-self-hosted-gateway-kubernetes.md)