add rust to quickstarts

Author: Franco

docs/quickstarts.mdx

@@ -22,6 +22,7 @@ Choose your language to get started quickly.
     { href: "/develop/ruby/set-up-local-ruby", title: "Ruby", description: "Install the Ruby SDK and run a Hello World Workflow in Ruby." },
     { href: "/develop/typescript/set-up-your-local-typescript", title: "TypeScript", description: "Install the TypeScript SDK and run a Hello World Workflow in TypeScript." },
     { href: "/develop/dotnet/set-up-your-local-dotnet", title: ".NET", description: "Install the .NET SDK and run a Hello World Workflow in C#." },
+    { href: "/develop/rust/quickstart", title: "Rust", description: "Install the Rust SDK and run a Hello World Workflow in Rust." },
   ]}
 />