docs(vscode): update feature list and fix image link in README

Author: jpoehnelt

.changeset/khaki-boats-tie.md

@@ -0,0 +1,5 @@
+---
+"google-workspace-developer-tools": patch
+---
+
+Update feature list.

packages/vscode-extension/README.md

@@ -6,7 +6,9 @@ This VS Code extension provides a set of tools to help Google Workspace develope
 
 - **OAuth2 Scope Linting**: Get warnings and additional information for Google Workspace [OAuth2 scopes](https://developers.google.com/identity/protocols/oauth2/scopes) in your code.
 
-  ![OAuth2 Scope Linting](./assets/scope-diagnostics.png)
+  ![OAuth2 Scope Linting](https://raw.githubusercontent.com/googleworkspace/vscode-extension/main/packages/vscode-extension/assets/scope-diagnostics.png)
+
+- **MCP (Model Context Protocol) Server**: Registers the Google Workspace Developer Tools MCP server, enabling enhanced development tools.
 
 ## Usage