Doc updates

Author: ejsmith

docs/.vitepress/config.ts

@@ -6,7 +6,7 @@ export default defineConfig({
   base: '/',
   ignoreDeadLinks: true,
   head: [
-    ['link', { rel: 'icon', href: 'https://raw.githubusercontent.com/FoundatioFx/Foundatio/master/media/foundatio.svg', type: 'image/svg+xml' }],
+    ['link', { rel: 'icon', href: 'https://raw.githubusercontent.com/FoundatioFx/Foundatio/main/media/foundatio-icon.png', type: 'image/png' }],
     ['meta', { name: 'theme-color', content: '#3c8772' }]
   ],
   themeConfig: {

docs/index.md

@@ -6,8 +6,7 @@ hero:
   text: Blazingly Fast C# Mediator
   tagline: Convention-based mediator powered by source generators and interceptors
   image:
-    light: https://raw.githubusercontent.com/FoundatioFx/Foundatio/master/media/foundatio.svg
-    dark: https://raw.githubusercontent.com/FoundatioFx/Foundatio/master/media/foundatio-dark-bg.svg
+    src: https://raw.githubusercontent.com/FoundatioFx/Foundatio/main/media/foundatio-icon.png
     alt: Foundatio.Mediator
   actions:
     - theme: brand