docs: update index.md to include all possible types of ads in docs

Author: psnet

docs/index.mdx

@@ -496,9 +496,11 @@ RewardedAd.createForAdRequest(TestIds.REWARDED);
 ## Next Steps
 
 Now the basics of setting up and configuring AdMob have been explained, we can go ahead and start to display different
-adverts to our users. The AdMob module provides integration with three different types:
+adverts to our users. The AdMob module provides integration with six different types:
 
 - [App Open Ads](/displaying-ads#app-open-ads)
 - [Interstitial Ads](/displaying-ads#interstitial-ads)
 - [Rewarded Ads](/displaying-ads#rewarded-ads)
 - [Banner Ads](/displaying-ads#banner-ads-component)
+- [Rewarded Interstitial Ads](/displaying-ads#rewarded-interstitial-ads)
+- [Native Ads](/native-ads)