Changed the double card description (#68)

apps/docs/introduction.mdx

@@ -36,7 +36,7 @@ Quicklinks to set up your account and get started
     icon="node-js"
     href="/get-started/nodejs"
   >
-    Learn how to use our API to send emails programmatically.
+    Learn how to use our SDK using NodeJS to send emails programmatically.
   </Card>
     <Card
     title="SMTP support"