Automated documentation update (#1042)

Automated documentation update [skip ci]

Co-authored-by: github-actions <[email protected]>

Author: devcontainers-bot

src/rust/README.md

@@ -17,6 +17,7 @@ Installs Rust, common Rust utilities, and their required dependencies
 |-----|-----|-----|-----|
 | version | Select or enter a version of Rust to install. | string | latest |
 | profile | Select a rustup install profile. | string | minimal |
+| targets | Optional comma separated list of additional Rust targets to install. | string | - |
 
 ## Customizations