1. use correct links for srcset attribute of picture source
2. wrap the picture element with a link correctly
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Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Change all license headers to comply with REUSE specification.
Fix#16132
Co-authored-by: flynnnnnnnnnn <flynnnnnnnnnn@github>
Co-authored-by: John Olheiser <john.olheiser@gmail.com>