Incorrect output for XmlElement.InnerText property in example code

In https://docs.microsoft.com/en-us/dotnet/api/system.xml.xmlelement.innertext the output in the comment of the example code is incorrect. (It appears that it's necessary to double-escape the & character.)

Existing code:
`// Text containing will have char(<) and char(>) escaped.`

Correct:
`// Text containing <markup/> will have char(<) and char(>) escaped.`