Update index.md

Update Facebook Ads Links to the API reference - we recently upgraded from V16->V18

Author: t2b2015

src/connections/sources/catalog/cloud-apps/facebook-ads/index.md

@@ -51,7 +51,7 @@ Collections are the groupings of resources we pull from your source. In your war
 | ad_accounts | object | An ad account is an account used to manage ads on Facebook                                                                  |
 | ad_sets     | object | An [ad set](https://developers.facebook.com/docs/marketing-api/reference/ad-campaign){:target="_blank"} is a group of ads that share the same daily or lifetime budget, schedule, bid type, bid info, and targeting data |
 | ads         | object | An [ad](https://developers.facebook.com/docs/marketing-api/reference/adgroup){:target="_blank"} object contains the data necessary to visually display an ad and associate it with a corresponding ad set.               |
-| campaigns   | object | A [campaign](https://developers.facebook.com/docs/marketing-api/reference/v13.0){:target="_blank"} is a grouping of ad sets which are organized by the same business objective.                              |
+| campaigns   | object | A [campaign](https://developers.facebook.com/docs/marketing-api/reference/ad-campaign-group/){:target="_blank"} is a grouping of ad sets which are organized by the same business objective.                              |
 | insights    | object | [Insights](https://developers.facebook.com/docs/marketing-api/reference/adgroup/insights/){:target="_blank"} contain performance statistics for an ad broken down by day.                                                |