Update 2_credentials.md

docs/stripe/2_credentials.md

@@ -1,16 +1,20 @@
-# Credentials
+# Stripe Credentials
+
+To use Stripe with Pay, you'll need to add your API keys and Signing Secret(s) to your Rails app. See [Configuring Pay](/docs/2_configuration.md#credentials) for instructions on adding credentials or ENV Vars.
 
 ### API keys
 
 You can find your Stripe private (secret) and pubilc (publishable) keys in the [Stripe Dashboard](https://dashboard.stripe.com/test/apikeys).
 
 ### Signing secrets
 
-#### Dashbaord
+Webhooks use signing secrets to verify the webhook was sent by Stripe. You can find these on your Stripe Dashboard or the Stripe CLI.
+
+#### Dashboard
 
-Each webhook endpoint has it's own signing secret that you can reveal on the [Webhook detail page](https://dashboard.stripe.com/test/webhooks/).
+The [Webhooks](https://dashboard.stripe.com/test/webhooks/) page on Stripe contains all the defined endpoints and their signing secrets.
 
-#### Stripe CLI
+#### Stripe CLI (Development)
 
 View the webhook signing secret used by the Stripe CLI by running: