doc: change "associate" to "create" for OpenID connector (aws#1208)

Author: goswamig

doc/amazon_sagemaker_operators_for_kubernetes.rst

@@ -82,12 +82,11 @@ IAM role-based operator deployment
 Before you can deploy your operator using an IAM role, associate an OpenID Connect (OIDC) provider with your role to
 authenticate with the IAM service.
 
-Associate an OpenID Connect Provider to Your Instance
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+Create an OpenID Connect Provider for Your Cluster
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-Create an OIDC identity provider for your cluster. If your
-cluster is managed by EKS, then your cluster will already have an OIDC
-attached to it. 
+The following instruction will create and associate an OIDC provider
+with your EKS cluster.
 
 Set the local ``CLUSTER_NAME`` and \ ``AWS_REGION`` environment
 variables as follows: