Merge branch 'kpaizee-fix-redirects-docs' into 'master'

Fix doc links that are redirecting

See merge request https://gitlab.com/gitlab-org/omnibus-gitlab/-/merge_requests/7111

Merged-by: Evan Read <[email protected]>
Approved-by: Evan Read <[email protected]>
Reviewed-by: Kati Paizee <[email protected]>
Co-authored-by: Kati Paizee <[email protected]>

Author: eread

doc/settings/ssl/index.md

@@ -138,7 +138,7 @@ server are:
 - [ZeroSSL](https://zerossl.com/documentation/acme/)
 - [Buypass](https://www.buypass.com/products/tls-ssl-certificates/go-ssl)
 - [SSL.com](https://www.ssl.com/guide/ssl-tls-certificate-issuance-and-revocation-with-acme/)
-- [`step-ca`](https://smallstep.com/docs/step-ca)
+- [`step-ca`](https://smallstep.com/docs/step-ca/index.html)
 
 To configure GitLab to use a custom ACME server:
 

doc/update/convert_to_omnibus.md

@@ -15,13 +15,6 @@ Please be advised that you lose your settings in files such as `gitlab.yml`,
 Before starting the migration, ensure that you are moving to **exactly the same version** of GitLab.
 To convert your installation to using the Linux package:
 
-1. If your current GitLab installation uses MySQL, you first need to migrate
-   your data to PostgreSQL, because starting with GitLab 12.1, PostgreSQL is the
-   only supported database management system. If you already use PostgreSQL, skip this step.
-   1. Verify the [PostgreSQL requirements and supported versions](https://docs.gitlab.com/ee/install/requirements.html#postgresql-requirements),
-   then [install PostgreSQL and create a database](https://docs.gitlab.com/ee/install/installation.html#6-database).
-   1. After the database is created, [migrate the MySQL data to PostgreSQL](https://docs.gitlab.com/ee/update/mysql_to_postgresql.html#source-installation).
-
 1. Create a backup from your current installation:
 
    ```shell