Clarify SSH key setup in README

Author: jovrtn

README.md

@@ -48,5 +48,5 @@ action "Git Push to Production" {
 
 1. [Generate a new SSH key pair](https://help.github.com/articles/generating-a-new-ssh-key-and-adding-it-to-the-ssh-agent/) as a special deploy key. The simplest method is to generate a key pair with a blank passphrase, which creates an unencrypted private key.
 2. Store your public and private keys in your GitHub repository as new 'Secrets' (under your repository settings), using the names `WPENGINE_SSH_KEY_PRIVATE` and `WPENGINE_SSH_KEY_PUBLIC` respectively. In theory, this replaces the need for encryption on the key itself, since GitHub repository secrets are encrypted by default.
-3. Add the public key to your WP Engine production environment.
+3. Add the public key to your target WP Engine environment.
 4. Per the [WP Engine documentation](https://wpengine.com/git/), it takes about 30-45 minutes for the new SSH key to become active.