fix wrong prefix did key

Changed files
+1
src
+1
src/main.rs
···
let bytes = pubkey.as_ref().to_bytes();
let mut key = Vec::with_capacity(34);
key.push(0xE7);
+
key.push(0x01);
key.push(bytes[64] % 2 + 0x02);
key.extend_from_slice(&bytes[1..33]);
PublicDidKey(key)