@astrolib/seo -- HTML5 Validation Errors

[ShoGinn]

I opened an issue on onwidget/astrolib#15 (comment)

The issue is that meta tags and link tags in SEO are generated using the void style, which is against HTML standards.

More details are in the dependencies, but it plays a factor for astrowind.

Details

Example from 404.html

  1:1926  error  Expected omitted end tag <meta> instead of self-closing element <meta/>  void-style
  1:1970  error  Expected omitted end tag <meta> instead of self-closing element <meta/>  void-style
  1:2036  error  Expected omitted end tag <link> instead of self-closing element <link/>  void-style
  1:2083  error  Expected omitted end tag <meta> instead of self-closing element <meta/>  void-style
  1:2182  error  Expected omitted end tag <meta> instead of self-closing element <meta/>  void-style
  1:2253  error  Expected omitted end tag <meta> instead of self-closing element <meta/>  void-style
  1:2297  error  Expected omitted end tag <meta> instead of self-closing element <meta/>  void-style
  1:2403  error  Expected omitted end tag <meta> instead of self-closing element <meta/>  void-style
  1:2444  error  Expected omitted end tag <meta> instead of self-closing element <meta/>  void-style
  1:2507  error  Expected omitted end tag <meta> instead of self-closing element <meta/>  void-style

[prototypa]

Hi @ShoGinn

Thank you for this. Very valid. I was quickly reviewing the PR in astrolib and it looks very interesting. As soon as possible I do a deep review and approve the PR.

[ShoGinn]

@prototypa Thanks for indulging my contributions!