Update using_gke_with_terraform.html.markdown (#4447) (#2918)

Remove stray word: Learn

Co-authored-by: Walter Sosa <[email protected]>
Signed-off-by: Modular Magician <[email protected]>

Co-authored-by: Walter Sosa <[email protected]>

Author: modular-magician

.changelog/4447.txt

@@ -0,0 +1,3 @@
+```release-note:none
+
+```

website/docs/guides/using_gke_with_terraform.html.markdown

@@ -8,7 +8,7 @@ description: |-
 
 # Using GKE with Terraform
 
--> Visit the [Provision a GKE Cluster (Google Cloud)](https://learn.hashicorp.com/tutorials/terraform/gke?in=terraform/kubernetes&utm_source=WEBSITE&utm_medium=WEB_IO&utm_offer=ARTICLE_PAGE&utm_content=DOCS) Learn tutorial to learn how to provision and interact
+-> Visit the [Provision a GKE Cluster (Google Cloud)](https://learn.hashicorp.com/tutorials/terraform/gke?in=terraform/kubernetes&utm_source=WEBSITE&utm_medium=WEB_IO&utm_offer=ARTICLE_PAGE&utm_content=DOCS) tutorial to learn how to provision and interact
 with a GKE cluster.
 
 This page is a brief overview of GKE usage with Terraform, based on the content