Fix redirects

- Replace `/database-access/` with `/database-access/introduction/` as a
  redirect destination, as well as `/kubernetes-access/`.
- Remove a duplicate redirect.
- Remove a redirect to an existing page.

docs/config.json

@@ -2332,7 +2332,7 @@
     },
     {
       "source": "/preview/database-access/",
-      "destination": "/database-access/",
+      "destination": "/database-access/introduction/",
       "permanent": true
     },
     {
@@ -2342,7 +2342,7 @@
     },
     {
       "source": "/kubernetes-ssh/",
-      "destination": "/kubernetes-access/",
+      "destination": "/kubernetes-access/introduction/",
       "permanent": true
     },
     {
@@ -2442,7 +2442,7 @@
     },
     {
       "source": "/kubernetes-access/getting-started/local/",
-      "destination": "/kubernetes-access/",
+      "destination": "/kubernetes-access/introduction/",
       "permanent": true
     },
     {
@@ -2520,11 +2520,6 @@
       "destination": "/access-controls/access-request-plugins/ssh-approval-jira/",
       "permanent": true
     },
-    {
-      "source": "/enterprise/workflow/ssh-approval-jira-cloud/",
-      "destination": "/access-controls/access-request-plugins/ssh-approval-jira/",
-      "permanent": true
-    },
     {
       "source": "/enterprise/workflow/ssh-approval-slack/",
       "destination": "/access-controls/access-request-plugins/ssh-approval-slack/",
@@ -3315,16 +3310,6 @@
       "destination": "/machine-id/deployment/gitlab/",
       "permanent": true
     },
-    {
-      "source": "/server-access/guides/openssh/",
-      "destination": "/server-access/guides/openssh/openssh/",
-      "permanent": true
-    },
-    {
-      "source": "/server-access/guides/openssh/",
-      "destination": "/server-access/guides/openssh/openssh/",
-      "permanent": true
-    },
     {
       "source": "/database-access/rbac/configuring-auto-user-provisioning/",
       "destination": "/database-access/auto-user-provisioning/",