fix(component-config): clarify GUNICORN_WORKERS value

Author: mboersma

src/managing-workflow/component-configuration.md

@@ -26,7 +26,7 @@ The following environment variables are tunable for the [Controller][] component
 Setting             | Description
 ------------------- | ---------------------------------
 REGISTRATION_MODE   | set registration to "enabled", "disabled", or "admin_only" (default: "enabled")
-GUNICORN_WORKERS    | number of [gunicorn][] workers spawned to process requests (default: 8)
+GUNICORN_WORKERS    | number of [gunicorn][] workers spawned to process requests (default: CPU cores * 4 + 1)
 DEIS_RESERVED_NAMES | a comma-separated list of names which applications cannot reserve for routing (default: "deis")
 
 ## Customizing the Database