first commit (#1190)

Co-authored-by: tomer-stripe <42354557+tomer-stripe@users.noreply.github.com>

pkg/fixtures/triggers.go

@@ -188,7 +188,7 @@ func Trigger(ctx context.Context, event string, stripeAccount string, baseURL st
 		} else {
 			exists, _ := afero.Exists(fs, event)
 			if !exists {
-				return nil, fmt.Errorf(fmt.Sprintf("The event ‘%s’ is not supported by the Stripe CLI.", event))
+				return nil, fmt.Errorf(fmt.Sprintf("The event `%s` is not supported by Stripe CLI. To trigger unsupported events, use the Stripe API or Dashboard to perform actions that lead to the event you want to trigger (for example, create a Customer to generate a `customer.created` event). You can also create a custom fixture: https://docs.stripe.com/cli/fixtures", event))
 			}
 
 			fixture, err = BuildFromFixtureFile(fs, apiKey, stripeAccount, baseURL, event, skip, override, add, remove, edit)