docs: fix typo

closes mysqljs#2107

Author: stephan281094

Readme.md

@@ -221,7 +221,7 @@ issue [#501](https://github.com/mysqljs/mysql/issues/501). (Default: `false`)
   objects only when they cannot be accurately represented with [JavaScript Number objects] (http://ecma262-5.com/ELS5_HTML.htm#Section_8.5)
   (which happens when they exceed the [-2^53, +2^53] range), otherwise they will be returned as
   Number objects. This option is ignored if `supportBigNumbers` is disabled.
-* `dateStrings`: Force date types (TIMESTAMP, DATETIME, DATE) to be returned as strings rather then
+* `dateStrings`: Force date types (TIMESTAMP, DATETIME, DATE) to be returned as strings rather than
    inflated into JavaScript Date objects. Can be `true`/`false` or an array of type names to keep as
    strings. (Default: `false`)
 * `debug`: Prints protocol details to stdout. Can be `true`/`false` or an array of packet type names