changed wtxid serialization

mine-your-first-block/src/main.rs

@@ -146,7 +146,7 @@ fn create_coinbase_tx(total_tx_fee: u64, mut witness_root_vec: Vec<String>) -> T
 
     let witness_root_hash = get_merkle_root(witness_root_vec);
     let mut witness_root_hash_bytes = hex::decode(witness_root_hash).unwrap();
-    //witness_root_hash_bytes.reverse(); // Reverse to match endianness maybe dont need this??
+    witness_root_hash_bytes.reverse(); // Reverse to match endianness maybe dont need this??
 
     let reserved_value = vec![0; 32]; // 32 bytes of zeros
     let mut commitment_payload = Vec::new();