Change branding info in SC storybook (#32422)

* fix: change branding info in SC storybook

* doc: put storybook link in README

packages/shared-components/.storybook/ElementTheme.ts

@@ -21,8 +21,7 @@ export default create({
     // Toolbar
     barBg: "#ffffff",
 
-    brandTitle: "Element Web",
-    brandUrl: "https://github.com/element-hq/element-web",
-    brandImage: "https://element.io/images/logo-ele-secondary.svg",
+    brandTitle: "Web Shared Components",
+    brandUrl: "https://github.com/element-hq/element-web/tree/develop/packages/shared-components",
     brandTarget: "_self",
 });

packages/shared-components/README.md

@@ -1,5 +1,7 @@
 # @element-hq/web-shared-components
 
+[Online storybook](https://shared-components-storybook.element.dev)
+
 Shared React components library for Element Web, Aurora, Element
 modules... This package provides opinionated UI components built on top of the
 [Compound Design System](https://compound.element.io) and [Compound