fix: md lint

resources/how-to-add-an-opcode.md

@@ -4,10 +4,10 @@
   - [Bitcoin Script Wiki](https://en.bitcoin.it/wiki/Script)
   - [Reference implementation in btcd](https://github.com/btcsuite/btcd/blob/b161cd6a199b4e35acec66afc5aad221f05fe1e3/txscript/opcode.go#L312)
   - In btcd find the function that matches the last element in `opcodeArray` for the specified opcode, that will be the reference implementation.
-2. Add the Opcode to `src/opcodes/opcodes.cairo`
+1. Add the Opcode to `src/opcodes/opcodes.cairo`.
   - Add the Opcode byte const like `pub const OP_ADD: u8 = 147;`
   - Create the function implementing the opcode like `fn opcode_add(ref engine: Engine) {`
   - Add the function to the `execute` method like `147 => opcode_add(ref engine),`
-3. Add the Opcode to the compiler dict at `src/compiler.cairo` like `opcodes.insert('OP_ADD', Opcode::OP_ADD);`.
-4. Create a test for your opcode at `src/opcodes/tests/test_opcodes.cairo` and ensure all the logic works as expected.
-5. Create a PR, ensure CI passes, and await review.
+1. Add the Opcode to the compiler dict at `src/compiler.cairo` like `opcodes.insert('OP_ADD', Opcode::OP_ADD);`.
+1. Create a test for your opcode at `src/opcodes/tests/test_opcodes.cairo` and ensure all the logic works as expected.
+1. Create a PR, ensure CI passes, and await review.