docs: sponsors update

Author: posva

packages/docs/.vitepress/components/sponsors.json

@@ -1,12 +1,5 @@
 {
-  "platinum": [
-    {
-      "href": "https://vuetoronto.com/?utm_source=vuerouter&utm_campaign=sponsor",
-      "alt": "VueConf Toronto",
-      "imgSrcLight": "/sponsors/vuetoronto.svg",
-      "imgSrcDark": "/sponsors/vuetoronto.svg"
-    }
-  ],
+  "platinum": [],
   "gold": [
     {
       "href": "https://vuejobs.com/?utm_source=vuerouter&utm_campaign=sponsor",
@@ -38,15 +31,15 @@
     },
     {
       "alt": "Antony Konstantinidis",
-      "href": "www.vuejs.de",
+      "href": "https://www.vuejs.de",
       "imgSrcDark": "https://avatars.githubusercontent.com/u/4183726?u=6b50a8ea16de29d2982f43c5640b1db9299ebcd1&v=4",
       "imgSrcLight": "https://avatars.githubusercontent.com/u/4183726?u=6b50a8ea16de29d2982f43c5640b1db9299ebcd1&v=4"
     },
     {
-      "href": "https://storyblok.com",
-      "imgSrcLight": "https://posva-sponsors.pages.dev/logos/storyblok.png",
-      "imgSrcDark": "https://posva-sponsors.pages.dev/logos/storyblok.png",
-      "alt": "Storyblok"
+      "alt": "Storyblok",
+      "href": "https://www.storyblok.com",
+      "imgSrcDark": "https://avatars.githubusercontent.com/u/13880908?v=4",
+      "imgSrcLight": "https://avatars.githubusercontent.com/u/13880908?v=4"
     },
     {
       "href": "https://nuxtjs.org",