Fix lines generating a kramdown warning

doc/administration/packages/container_registry.md

@@ -449,8 +449,9 @@ you can pull from the Container Registry, but you cannot push.
 1. This example uses the `aws` CLI. If you haven't configured the
    CLI before, you have to configure your credentials by running `sudo aws configure`.
    Because a non-admin user likely can't access the Container Registry folder,
-   ensure you use `sudo`. To check your credential configuration, run [`ls`]
-   to list all buckets.
+   ensure you use `sudo`. To check your credential configuration, run
+   [`ls`](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/s3/ls.html) to list
+   all buckets.
 
    ```shell
    sudo aws --endpoint-url https://your-object-storage-backend.com s3 ls

doc/api/instance_level_ci_variables.md

@@ -79,7 +79,7 @@ POST /admin/ci/variables
 | Attribute       | Type    | required | Description           |
 |-----------------|---------|----------|-----------------------|
 | `key`           | string  | yes      | The `key` of a variable. Max 255 characters, only `A-Z`, `a-z`, `0-9`, and `_` are allowed. |
-| `value`         | string  | yes      | The `value` of a variable. 10,000 characters allowed. [Since GitLab 13.3] |
+| `value`         | string  | yes      | The `value` of a variable. 10,000 characters allowed. [Since GitLab 13.3](https://gitlab.com/gitlab-org/gitlab/-/issues/220028) |
 | `variable_type` | string  | no       | The type of a variable. Available types are: `env_var` (default) and `file`. |
 | `protected`     | boolean | no       | Whether the variable is protected. |
 | `masked`        | boolean | no       | Whether the variable is masked. |

doc/development/dangerbot.md

@@ -136,7 +136,7 @@ at GitLab so far:
   - Their availability:
     - No "OOO"/"PTO"/"Parental Leave" in their GitLab or Slack status.
     - No `:red_circle:`/`:palm_tree:`/`:beach:`/`:beach_umbrella:`/`:beach_with_umbrella:` emojis in GitLab or Slack status.
-  - [Experimental] Their timezone: people for which the local hour is between
+  - (Experimental) Their timezone: people for which the local hour is between
     6 AM and 2 PM are eligible to be picked. This is to ensure they have a good
     chance to get to perform a review during their current work day. The experimentation is tracked in
     [this issue](https://gitlab.com/gitlab-org/quality/team-tasks/-/issues/563)