Crosslink to the weighted repo storage doc

Add link to repository_storages_weighted setting
to better guide users on its limit

doc/api/settings.md

@@ -321,7 +321,7 @@ 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_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. |
+| `repository_storages_weighted`           | hash of strings to integers | no                        | (GitLab 13.1 and later) Hash of names of taken from `gitlab.yml` to [weights](../administration/repository_storage_paths.md#choose-where-new-repositories-will-be-stored). New projects are created in one of these stores, chosen by a weighted random selection. |
 | `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. |
 | `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. |