Add environment intro before getting started

Author: ropats16

lessons/projects/5.mdx

@@ -28,7 +28,7 @@ and create a basic **NFT minting application** that displays the three tiers of
 created in our smart contract and gives users a one-click option to mint them. Once
 minted, users will be redirected to a page that displays information of their mint.
 
-Let's dive in!
+Hope you have your code editors open because we're about to dive in!
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