Fix cheatsheet

Author: minaminao

docs/cheatsheet.rst

@@ -81,7 +81,7 @@ Global Variables
 - ``abi.encodeWithSelector(bytes4 selector, ...) returns (bytes memory)``: :ref:`ABI <ABI>`-encodes
   the given arguments starting from the second and prepends the given four-byte selector
 - ``abi.encodeWithSignature(string memory signature, ...) returns (bytes memory)``: Equivalent
-  to ``abi.encodeWithSelector(bytes4(keccak256(bytes(signature)), ...)```
+  to ``abi.encodeWithSelector(bytes4(keccak256(bytes(signature)), ...)``
 - ``bytes.concat(...) returns (bytes memory)``: :ref:`Concatenates variable number of
   arguments to one byte array<bytes-concat>`
 - ``block.basefee`` (``uint``): current block's base fee (`EIP-3198 <https://eips.ethereum.org/EIPS/eip-3198>`_ and `EIP-1559 <https://eips.ethereum.org/EIPS/eip-1559>`_)