Correct a couple years of accumulated typos

coordinator/src/substrate/cosign.rs

@@ -140,7 +140,7 @@ async fn potentially_cosign_block(
 
   // If we skipped a block, we're supposed to sign it plus the COSIGN_DISTANCE if no other blocks
   // trigger a cosigning protocol covering it
-  // This means there will be the maximum delay allowed from a block needing cosigning occuring
+  // This means there will be the maximum delay allowed from a block needing cosigning occurring
   // and a cosign for it triggering
   let maximally_latent_cosign_block =
     skipped_block.map(|skipped_block| skipped_block + COSIGN_DISTANCE);

coordinator/src/tributary/handle.rs

@@ -42,7 +42,7 @@ pub fn dkg_confirmation_nonces(
     .preprocess()
 }
 
-// If there's an error generating a key pair, return any errors which would've occured when
+// If there's an error generating a key pair, return any errors which would've occurred when
 // executing the DkgConfirmer in order to stay in sync with those who did.
 //
 // The caller must ensure only error_generating_key_pair or generated_key_pair is called for a

coordinator/src/tributary/signing_protocol.rs

@@ -38,7 +38,7 @@
   only way to operate on distinct received messages would be if:
 
   1) A logical flaw exists, letting new messages over write prior messages
-  2) A reorganization occured from chain A to chain B, and with it, different messages
+  2) A reorganization occurred from chain A to chain B, and with it, different messages
 
   Reorganizations are not supported, as BFT is assumed by the presence of a BFT algorithm. While
   a significant amount of processes may be byzantine, leading to BFT being broken, that still will

coordinator/tributary/src/tests/blockchain.rs

@@ -74,7 +74,7 @@ fn invalid_block() {
     assert!(blockchain.verify_block::<N>(&block, &validators, false).is_err());
   }
 
-  // Mutate tranactions merkle
+  // Mutate transactions merkle
   {
     let mut block = block;
     block.header.transactions = Blake2s256::digest(block.header.transactions).into();