hotfix(docs): add link for sending proofs on mainnet (#1716)

Co-authored-by: Julian Arce <[email protected]>

Author: avilagaston9

docs/1_introduction/1_try_aligned.md

@@ -2,6 +2,11 @@
 
 In this tutorial, you will learn how to send your first SP1 proofs to get verified in Aligned in under 3 minutes.
 
+{% hint style="warning" %}
+This tutorial is for sending proofs on Holesky network.
+To send proofs on Mainnet, please refer to the [submitting proofs](../3_guides/0_submitting_proofs.md) guide.
+{% endhint %}
+
 ## Quickstart
 
 We will download a previously generated SP1 proof, send it to Aligned for verification, and retrieve the results from Ethereum Holesky testnet.