Update learn/infrastructure/guardians.md

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

Author: ilariae

learn/infrastructure/guardians.md

@@ -55,7 +55,7 @@ The VAAs' signing scheme can be changed without affecting downstream users, and
 
 Today, Wormhole supports a broader range of ecosystems than any other interoperability protocol because it uses simple tech (t-schnorr signatures), an adaptable, heterogeneous relayer model, and a robust validator network.
 
-Wormhole can expand to new ecosystems as quickly as a Core Contract can be developed for the smart-contract runtime. Relayers don't need to be factored into the security model; they just need to be able to upload messages to the blockchain. The Guardians are able to observe every transaction on every chain without taking shortcuts.
+Wormhole can expand to new ecosystems as quickly as a Core Contract can be developed for the smart contract runtime. Relayers don't need to be factored into the security model; they just need to be able to upload messages to the blockchain. The Guardians are able to observe every transaction on every chain without taking shortcuts.
 
 ### Scalability