BIP-0324: fix typo #1812

1. 
   leopardracer commented at 7:59 pm on April 6, 2025: contributor

   decypt to decrypt
2. Update reference.py 54c39b27b9
3. in bip-0324/reference.py:569 in 54c39b27b9

   565@@ -566,7 +566,7 @@ def get_keystream_bytes(self, nbytes):
   566         return ret
   567 
   568     def crypt(self, chunk):
   569-        """Encrypt or decypt chunk."""
   570+        """Encrypt or decrypt chunk."""
   

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   jonatack commented at 3:40 pm on April 7, 2025:

   I was initially confused how this function does both encryption and decryption, but per the BIP text on FSChaCha20: “Encryption and decryption are identical here, so a single function crypt is exposed.”
4. 
   jonatack commented at 3:40 pm on April 7, 2025: member

   ACK.

   This text was added in cc177ab7bc5abcdcdf9c956ee88afd105205332.

   Verified this is the only instance of this typo in the repo.

5. jonatack merged this on Apr 7, 2025
6. jonatack closed this on Apr 7, 2025

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7. 
   leopardracer commented at 3:44 pm on April 7, 2025: contributor

   ACK.

   This text was added in cc177ab.

   Verified this is the only instance of this typo in the repo.

   Glad I could help!

Contributors
leopardracer jonatack