Update ecrecovery.rst
Update ecrecovery.rst

Fix typo
OpenZeppelin/openzeppelin-contracts,OpenZeppelin/zeppelin-solidity,pash7ka/zeppelin-solidity,pash7ka/zeppelin-solidity,OpenZeppelin/zep-solidity,OpenZeppelin/zeppelin-solidity,OpenZeppelin/openzeppelin-contracts,OpenZeppelin/openzeppelin-contracts,OpenZeppelin/zep-solidity