[kots]: fix typo in CA cert extract command

Author: Simon Emms

install/kots/manifests/kots-config.yaml

@@ -265,7 +265,7 @@ spec:
             certificate and install it to your browser.
 
             To download the certificate, run
-            `kubectl get secrets -n {{repl Namespace }}  ca-issuer-ca -o jsonpath='{.data.ca\.crt}' | base64 -d > ~/ca.crt`
+            `kubectl get secrets -n {{repl Namespace }}  ca-issuer-ca -o jsonpath='{.data.ca\.crt}' | base64 -d > ./ca.crt`
 
         - name: cert_manager_enabled
           title: Use cert-manager