update docs typo

Author: Sebastian-Webster

README.md

@@ -88,7 +88,7 @@ If on Windows, this is the name of the named pipe that MySQL is listening on. If
 - `xSocket: string`
 If on Windows, this is the name of the named pipe that the MySQL X Plugin is listening on. If not on Windows, this is the path that the MySQL X Plugin is listening on. If ```options.xEnabled``` is set to "OFF", this value will be an empty string.
 - `mysql: {version: string, versionIsInstalledOnSystem: boolean}`
-An object with three properties. ```version``` is the version of MySQL used to create the database. ```versionIsInstalledOnSystem``` will be true if the MySQL version used is already installed on the system and false if the version had to be downloaded from MySQL's CDN.
+An object with two properties. ```version``` is the version of MySQL used to create the database. ```versionIsInstalledOnSystem``` will be true if the MySQL version used is already installed on the system and false if the version had to be downloaded from MySQL's CDN.
 - `stop: () => Promise<void>`
 The method to stop the database. The returned promise resolves when the database has successfully stopped.