Fix value of attribute "autocapitalize"

Change <input> attribute "autocapitalize" from value "off" to "none" regarding to apples dev guide:

https://developer.apple.com/library/content/documentation/AppleApplications/Reference/SafariHTMLRef/Articles/Attributes.html#//apple_ref/doc/uid/TP40008058-autocapitalize



Signed-off-by: Michael Letzgus <michaelletzgus@users.noreply.github.com>