Update learn/introduction.md

Co-authored-by: Erin Shaben <eshaben@icloud.com>

Author: ilariae

learn/introduction.md

@@ -11,8 +11,6 @@ Wormhole is a generic _message-passing protocol_ that enables communication betw
 
 !!! note
     The above is an oversimplified illustration of the protocol; details about the architecture and components are available on the [architecture page](#){target=\_blank}.
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 This simple message-passing protocol allows developers and users of cross-chain applications to leverage the advantages of multiple ecosystems.
 
 ## What Isn't Wormhole?