Update openai-access-gateway.md

Author: Prakash-Sundaresan

docs/concepts/managed-llms/openai-access-gateway.md

@@ -17,4 +17,4 @@ See [our tutorial](/docs/tutorials/deploying-openai-apps-aws-bedrock/) which des
 | [Playground](/docs/providers/playground#managed-services) | ❌ |
 | [AWS Bedrock](/docs/providers/aws#managed-llms) | ✅ |
 | [DigitalOcean GenAI](/docs/providers/digitalocean#future-improvements) | ❌ |
-| [GCP Vertex](/docs/providers/gcp#managed-llms) | ✅ |
+| [GCP Vertex AI](/docs/providers/gcp#managed-llms) | ✅ |