Merge branch 'cat-add-secrets-to-sidekiq-refarch-docs' into 'master'

Update step to copy secrets to sidekiq nodes in ref architectures

See merge request gitlab-org/gitlab!44720

doc/administration/reference_architectures/3k_users.md

@@ -1582,8 +1582,8 @@ On each node perform the following:
    ```
 
 1. Save the `/etc/gitlab/gitlab-secrets.json` file from one of the two
-   application nodes and install it on the other application node and the
-   [Gitaly node](#configure-gitaly) and
+   application nodes and install it on the other application node, the
+   [Gitaly node](#configure-gitaly) and the [Sidekiq node](#configure-sidekiq) and
    [reconfigure GitLab](../restart_gitlab.md#omnibus-gitlab-reconfigure).
 
 1. Verify the GitLab services are running:

doc/administration/reference_architectures/5k_users.md

@@ -1581,8 +1581,8 @@ On each node perform the following:
    ```
 
 1. Save the `/etc/gitlab/gitlab-secrets.json` file from one of the two
-   application nodes and install it on the other application node and the
-   [Gitaly node](#configure-gitaly) and
+   application nodes and install it on the other application node, the
+   [Gitaly node](#configure-gitaly) and the [Sidekiq node](#configure-sidekiq) and
    [reconfigure GitLab](../restart_gitlab.md#omnibus-gitlab-reconfigure).
 
 1. Verify the GitLab services are running: