fixed casing for MCP clients and reordered langchain section (#693)

Author: torresmateo

app/en/get-started/_meta.tsx

@@ -4,6 +4,8 @@ export const meta: MetaRecord = {
   "about-arcade": "About Arcade",
   setup: "Setup",
   quickstarts: "Quickstarts",
+  "agent-frameworks": "Agent Frameworks",
+  "mcp-clients": "MCP Clients",
 };
 
 export default meta;

app/en/get-started/agent-frameworks/langchain/_meta.tsx

@@ -1,4 +1,4 @@
 export default {
-  "auth-langchain-tools": "Authorizing existing tools",
   "use-arcade-with-langchain": "Setup Arcade with LangChain",
+  "auth-langchain-tools": "Authorizing existing tools",
 };