Update index.md (#1007)

Update URL to Intercom docs

Author: irinasayshi

src/connections/destinations/catalog/intercom/index.md

@@ -402,7 +402,7 @@ Our API doesn't support Intercom tags. Traits can be used instead of tags to cre
 
 ### Conditionally show the Intercom chat widget (Browser only)
 
-You can take advantage of Intercom's `hide_default_launcher` option to selectively show the chat widget. According to Intercom's [docs](https://docs.intercom.io/configure-intercom-for-your-product-or-site/customize-the-intercom-messenger/customize-the-intercom-messenger-technical#show-the-intercom-messenger-to-selected-users-for-web-), you want to first hide the Messenger for all users inside their UI using Messenger settings. Then think about how you want to programmatically decide which users you'd like to show the widget to. Then you can pass an Intercom specific destination setting like this:
+You can take advantage of Intercom's `hide_default_launcher` option to selectively show the chat widget. According to Intercom's [docs](https://www.intercom.com/help/en/articles/178-customize-the-intercom-messenger-basics), you want to first hide the Messenger for all users inside their UI using Messenger settings. Then think about how you want to programmatically decide which users you'd like to show the widget to. Then you can pass an Intercom specific destination setting like this:
 
 ```js
 // with analytics.js