Add documentation for user_email_lookup_limit setting

New setting was introduced in 14.7

Changlog: other

doc/api/settings.md

@@ -370,6 +370,7 @@ listed in the descriptions of the relevant settings.
 | `push_event_hooks_limit`                 | integer          | no                                   | Number of changes (branches or tags) in a single push to determine whether webhooks and services fire or not. Webhooks and services aren't submitted if it surpasses that value. |
 | `rate_limiting_response_text`            | string           | no                                   | When rate limiting is enabled via the `throttle_*` settings, send this plain text response when a rate limit is exceeded. 'Retry later' is sent if this is blank. |
 | `raw_blob_request_limit`                 | integer          | no                                   | Max number of requests per minute for each raw path. Default: 300. To disable throttling set to 0.|
+| `user_email_lookup_limit`                | integer          | no                                   | Max number of requests per minute for email lookup. Default: 60. To disable throttling set to 0.|
 | `recaptcha_enabled`                      | boolean          | no                                   | (**If enabled, requires:** `recaptcha_private_key` and `recaptcha_site_key`) Enable reCAPTCHA. |
 | `recaptcha_private_key`                  | string           | required by: `recaptcha_enabled`     | Private key for reCAPTCHA. |
 | `recaptcha_site_key`                     | string           | required by: `recaptcha_enabled`     | Site key for reCAPTCHA. |