Fix broken links on UCP links and TOC on 2.1 (#4573)

* fix UCP links and TOC on 2.1

Signed-off-by: Victoria Bialas <victoria.bialas@docker.com>

* re-organized 2.1 TOC to put TLS certs at end like for 2.2

Signed-off-by: Victoria Bialas <victoria.bialas@docker.com>

* fix links per Joao's comments

Signed-off-by: Victoria Bialas <victoria.bialas@docker.com>

_data/toc.yaml

@@ -1552,8 +1552,6 @@ manuals:
             section:
             - path: /datacenter/ucp/2.1/guides/admin/configure/license-your-installation/
               title: License your installation
-            - path: /datacenter/ucp/2.1/guides/admin/configure/use-your-own-tls-certificates/
-              title: Use your own TLS certificates
             - path: /datacenter/ucp/2.1/guides/admin/configure/scale-your-cluster/
               title: Scale your cluster
             - path: /datacenter/ucp/2.1/guides/admin/configure/set-up-high-availability/
@@ -1572,8 +1570,12 @@ manuals:
               title: Use domain names to access services
             - path: /datacenter/ucp/2.1/guides/admin/configure/run-only-the-images-you-trust/
               title: Run only the images you trust
+            - path: /datacenter/ucp/2.1/guides/admin/configure/integrate-with-dtr/
+              title: Integrate with Docker Trusted Registry
             - path: /datacenter/ucp/2.1/guides/admin/configure/external-auth/
               title: Integrate with LDAP
+            - path: /datacenter/ucp/2.1/guides/admin/configure/use-your-own-tls-certificates/
+              title: Use your own TLS certificates
           - sectiontitle: Manage users
             section:
             - path: /datacenter/ucp/2.1/guides/admin/manage-users/

datacenter/ucp/2.0/guides/configuration/integrate-with-dtr.md

@@ -139,4 +139,4 @@ steps as you used to configure your local computer.
 
 ## Where to go next
 
-* [Use externally-signed certificates](index.md)
+* [use your own externally-signed TLS certificates](index.md#customize-the-ucp-tls-certificates)

datacenter/ucp/2.1/guides/admin/configure/integrate-with-dtr.md

@@ -139,4 +139,4 @@ steps as you used to configure your local computer.
 
 ## Where to go next
 
-* [Use externally-signed certificates](index.md)
+* [Use your own TLS certificates](use-your-own-tls-certificates.md)

datacenter/ucp/2.2/guides/admin/configure/integrate-with-dtr.md

@@ -140,4 +140,4 @@ steps as you used to configure your local computer.
 
 ## Where to go next
 
-* [Use externally-signed certificates](index.md)
+* [Use your own TLS certificates](use-your-own-tls-certificates.md)