Quotation Mark/Apostrophe Switch

It’s part of the formatting features in WordPress (what’s known as the wptexturize function). You can turn this off by commenting out any of the add_filter lines in wp-includes/default-filters.php that use wptexturize, or by editing the function in wp-includes/functions-formatting.php.

Another, fancier option is to use a plugin to control text formatting:

https://dev.wp-plugins.org/wiki/TextControl
https://www.vapourtrails.ca/wp-preformatted

Ok, thanks for the help and quick reply.