Fix Typo (#1671)

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* [x] CHANGELOG updated or not needed
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hydra-plutus/src/Hydra/Contract/Commit.hs

@@ -41,7 +41,7 @@ data CommitRedeemer
 
 PlutusTx.unstableMakeIsData ''CommitRedeemer
 
--- | A data type representing comitted outputs on-chain. Besides recording the
+-- | A data type representing committed outputs on-chain. Besides recording the
 -- original 'TxOutRef', it also stores a binary representation compatible
 -- between on- and off-chain code to be hashed in the validators.
 data Commit = Commit