2022 PWA Simplified Chinese translation

What’s Changed

• Translate 2022 PWA chapter for Simplified Chinese (#3192) @ibelem
• Translation of methodology chapter to Japanese (#3193) @ksakae1216
• Update name on whitep4nth3r contributor (#3196) @whitep4nth3r
• Add 2022 home hero (#3195) @rviscomi
• Update contributors config for pankajparkar (#3181) @pankajparkar
• HTTP 2022 Chapter fix typo (#3191) @paivaspol
• Update seo.md (#3190) @rviscomi
• Fix code styling in CSS class name section (#3187) @tunetheweb
• Bump pytest-cov from 3.0.0 to 4.0.0 in /src (#3186) @dependabot
• Fix home page header inconsistency (#3184) @tunetheweb
• Bump sqlfluff from 1.3.1 to 1.3.2 in /src (#3183) @dependabot
• Broken link in Media chapter (#3182) @eeeps
• Update JavaScript contribitors (#3180) @tunetheweb
• Update spellcheck wordlist (#3175) @tunetheweb
• Clarify there is a minimum threshold for counting writing system support and likely causes (#3179) @bramstein