MongoDB connectors: update embedded how-to video (#673)

Author: Paul-Cornell

snippets/general-shared-text/mongodb.mdx

@@ -1,3 +1,13 @@
+<iframe
+width="560"
+height="315"
+src="https://www.youtube.com/embed/8YBVHt5spIQ"
+title="YouTube video player"
+frameborder="0"
+allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture"
+allowfullscreen
+></iframe>
+
 The MongoDB requirements for a MongoDB Atlas deployment include:
 
 import AllowIPAddressRanges from '/snippets/general-shared-text/ip-address-ranges.mdx';