fix validator link to discontinued w3c page

The page https://validator.w3.org/docs/help.html#faq-charset
re "No Character Encoding Found!"

links to https://www.w3.org/International/O-charset
via "The W3C I18N Activity has collected a few tips on how to do this."

But that page says:

  Warning: This page has been discontinued, and the information it contains is out of date and incorrect !

Please link instead to 

 https://www.w3.org/International/tutorials/tutorial-char-enc/

or

 https://www.w3.org/International/questions/qa-html-encoding-declarations

Thanks,

Neal McBurnett                 http://neal.mcburnett.org/

Received on Tuesday, 5 November 2019 00:17:25 UTC