Update docs content from https://github.com/depot/app

Author: kylegalbraith

content/github-actions/overview.mdx

@@ -55,6 +55,10 @@ Depot-managed GitHub Action Runners are available on [all of our pricing plans](
 
 Startup plans and above can pay for additional usage on a per minute basis for both Docker image builds and GitHub Actions minutes. For both types of minutes we charge on a per-minute basis, tracked per second. We only bill for whole minutes used at the end of the month.
 
+#### Estimating your cost savings
+
+You can estimate the potential cost savings by switching to Depot GitHub Action Runners by entering in your current usage by runner type on our [GitHub Actions Price calculator](/github-actions-price-calculator).
+
 ### Additional usage pricing for GitHub Actions minutes
 
 The **Startup** and **Business** plans have the option to pay for additional GitHub Actions minutes on a per-minute basis. See the [runner type list](/docs/github-actions/runner-types) for the per-minute pricing for each runner type.