Fixed link cody-gateway.mdx (#972)

Author: Steaphan-Sadler

docs/cody/core-concepts/cody-gateway.mdx

@@ -8,7 +8,7 @@ Cody Gateway powers the default `"provider": "sourcegraph"` and Cody completions
 
 ## Supported Models
 
-For a full list of supported models and providers, read our [Supported LLMs](/Cody/capabilities/supported-models) docs.
+For a full list of supported models and providers, read our [Supported LLMs](/cody/capabilities/supported-models) docs.
 
 ## Setting up Cody Gateway in Sourcegraph Enterprise