Update repository_storages_weighted in docs

doc/api/settings.md

@@ -48,7 +48,7 @@ Example response:
    "sign_in_text" : null,
    "container_expiration_policies_enable_historic_entries": true,
    "container_registry_token_expire_delay": 5,
-   "repository_storages": ["default"],
+   "repository_storages_weighted": {"default": 100},
    "plantuml_enabled": false,
    "plantuml_url": null,
    "terminal_max_session_time": 0,
@@ -314,7 +314,8 @@ are listed in the descriptions of the relevant settings.
 | `receive_max_input_size`                 | integer          | no                                   | Maximum push size (MB). |
 | `repository_checks_enabled`              | boolean          | no                                   | GitLab will periodically run `git fsck` in all project and wiki repositories to look for silent disk corruption issues. |
 | `repository_size_limit`                  | integer          | no                                   | **(PREMIUM)** Size limit per repository (MB) |
-| `repository_storages`                    | array of strings | no                                   | A list of names of enabled storage paths, taken from `gitlab.yml`. New projects will be created in one of these stores, chosen at random. |
+| `repository_storages`                    | array of strings | no                                   | (GitLab 13.0 and earlier) List of names of enabled storage paths, taken from `gitlab.yml`. New projects are created in one of these stores, chosen at random. |
+| `repository_storages_weighted`           | hash of strings to integers | no                        | (GitLab 13.1 and later) Hash of names of taken from `gitlab.yml` to weights. New projects are created in one of these stores, chosen by a weighted random selection. |
 | `require_two_factor_authentication`      | boolean          | no                                   | (**If enabled, requires:** `two_factor_grace_period`) Require all users to set up Two-factor authentication. |
 | `restricted_visibility_levels`           | array of strings | no                                   | Selected levels cannot be used by non-admin users for groups, projects or snippets. Can take `private`, `internal` and `public` as a parameter. Default is `null` which means there is no restriction. |
 | `rsa_key_restriction`                    | integer          | no                                   | The minimum allowed bit length of an uploaded RSA key. Default is `0` (no restriction). `-1` disables RSA keys. |