docs: add nerdctl to container_cli() doc comment for consistency

Fix documentation inconsistency where container_cli() method listed
only docker and finch as examples, while user-facing error messages
explicitly mention nerdctl as a supported container runtime.

Author: cursoragent

apps/framework-cli/src/utilities/docker.rs

@@ -60,7 +60,7 @@ impl DockerClient {
         Self { cli_command }
     }
 
-    /// Returns the configured container runtime executable name or path (e.g. `docker`, `finch`).
+    /// Returns the configured container runtime executable name or path (e.g. `docker`, `finch`, `nerdctl`).
     #[must_use]
     pub fn container_cli(&self) -> &str {
         &self.cli_command