feat(styles): add custom landing page thumbnail and replace background of all other page thumbnails

Author: novusnota

docs.json

@@ -19,6 +19,10 @@
     "default": "system",
     "strict": false
   },
+  "thumbnails": {
+    "appearance": "dark",
+    "background": "/resources/logo/og-image-bg.svg"
+  },
   "styling": {
     "eyebrows": "breadcrumbs"
   },
@@ -232,7 +236,6 @@
           "payments/overview",
           "payments/toncoin",
           "payments/jettons"
-
         ]
       },
       {
@@ -1680,4 +1683,4 @@
       "destination": "/contribute"
     }
   ]
-}
+}

index.mdx

@@ -1,7 +1,9 @@
 ---
-title: "Welcome to TON Blockchain documentation - TON Docs"
+title: "Welcome to TON Blockchain documentation"
 description: "Meet the next generation of TON documentation. AI-native, beautiful out-of-the-box, and built for developers."
 mode: "custom"
+"og:image": "resources/logo/og-image.png"
+"twitter:image": "resources/logo/og-image.png"
 ---
 
 export const Journey = ({ title, description, children }) => {