docs/i18n/en/docusaurus-plugin-content-blog/options.json

{
  "title": {
    "message": "Blog",
    "description": "The title for the blog used in SEO"
  },
  "description": {
    "message": "Blog",
    "description": "The description for the blog used in SEO"
  },
  "sidebar.title": {
    "message": "Recent posts",
    "description": "The label for the left sidebar"
  }
}