Fix incorrect mv command for kubectl-convert

Looks like the `mv` installation command for `kubectl-convert` had been copied from `kubectl` install, but not fully changed

Author: ruffrey

content/en/docs/tasks/tools/install-kubectl-macos.md

@@ -228,7 +228,7 @@ Below are the procedures to set up autocompletion for Bash and Zsh.
 1. Move the kubectl-convert binary to a file location on your system `PATH`.
 
    ```bash
-   sudo mv ./kubectl /usr/local/bin/kubectl-convert
+   sudo mv ./kubectl-convert /usr/local/bin/kubectl-convert
    sudo chown root: /usr/local/bin/kubectl-convert
    ```