doc(favicon): add documentation of favicon plugin (#1948)

dralagen

2025-04-29 6ba9c7c02aa75e58849f334514719e31be1cf522

 .prettierrc

@@ -2,5 +2,6 @@
  "printWidth": 100,
  "quoteProps": "as-needed",
  "trailingComma": "all",
  "tabWidth": 2
  "tabWidth": 2,
  "semi": false
}