fix in the README.md (#1898)

Co-authored-by: Nikhil Parasaram <[email protected]>

Author: dedyshkaPexto

README.md

@@ -12,7 +12,7 @@
 [![Pypi Installs](https://static.pepy.tech/badge/mythril)](https://pepy.tech/project/mythril)
 [![DockerHub Pulls](https://img.shields.io/docker/pulls/mythril/myth.svg)](https://cloud.docker.com/u/mythril/repository/docker/mythril/myth)
 
-Mythril is a symbolic-execution-based securty analysis tool for EVM bytecode. It detects security vulnerabilities in smart contracts built for Ethereum and other EVM-compatible blockchains.
+Mythril is a symbolic-execution-based security analysis tool for EVM bytecode. It detects security vulnerabilities in smart contracts built for Ethereum and other EVM-compatible blockchains.
 
 Whether you want to contribute, need support, or want to learn what we have cooking for the future, you can checkout diligence-mythx channel in [ConsenSys Discord server](https://discord.gg/consensys).