cargo.toml instead of wrangler.toml (#20791)

Author: ToriLindsay

src/content/docs/workers/languages/rust/index.mdx

@@ -214,17 +214,13 @@ To run the resulting Wasm binary on Workers, `workers-rs` includes a build tool
 
 Unoptimized Rust Wasm binaries can be large and may exceed Worker bundle size limits or experience long startup times. The template project pre-configures several useful size optimizations in your `Cargo.toml` file:
 
-<WranglerConfig>
-
 ```toml
 [profile.release]
 lto = true
 strip = true
 codegen-units = 1
 ```
 
-</WranglerConfig>
-
 Finally, `worker-bundle` automatically invokes [`wasm-opt`](https://github.com/brson/wasm-opt-rs) to further optimize binary size before upload.
 
 ## Related resources