Fix capitalisation and add instructions to encrypt pulp key

Author: technowhizz

doc/source/configuration/vault.rst

@@ -389,14 +389,26 @@ To enable tls for pulp using vault generated certificates, we first need to gene
 
       kayobe playbook run $KAYOBE_CONFIG_PATH/ansible/vault-generate-pulp-tls.yml
 
-2. Next, enable tls for pulp in pulp.yml
+2. Encrypt the generated private key with ansible-vault (use the correct path to your vault password file).
+
+   .. code-block::
+
+      ansible-vault encrypt --vault-password-file ~/vault.pass $KAYOBE_CONFIG_PATH/pulp/certificates/pulp.key
+
+   Or if environments are being used
+
+   .. code-block::
+
+      ansible-vault encrypt --vault-password-file ~/vault.pass $KAYOBE_CONFIG_PATH/environments/$KAYOBE_ENVIRONMENT/pulp/certificates/pulp.key
+
+3. Next, enable tls for pulp in pulp.yml
 
    .. code-block::
 
       # Whether to enable TLS for Pulp.
       pulp_enable_tls: true
 
-3. Redeploy pulp
+4. Redeploy pulp
 
    .. code-block::