update website to release-v1.6.1-aws-b1.0.2 (#667)

**Which issue is resolved by this Pull Request:**
Resolves #

**Description of your changes:**
Points toml and documentation to latest release version

**Testing:**
- [ ] Unit tests pass
- [ ] e2e tests pass
- Details about new tests (If this PR adds a new feature)
- Details about any manual tests performed

By submitting this pull request, I confirm that my contribution is made
under the terms of the Apache 2.0 license.

website/config.toml

@@ -119,12 +119,12 @@ disableKinds = ["taxonomy", "taxonomyTerm"]
   # These entries appear in the drop-down menu at the top of the website.
   [[params.versions]]
     version = "latest"
-    githubbranch = "release-v1.6.1-aws-b1.0.1"
+    githubbranch = "release-v1.6.1-aws-b1.0.2"
     url = "https://awslabs.github.io/kubeflow-manifests/docs"
   [[params.versions]]
     version = "v1.6"
-    githubbranch = "release-v1.6.1-aws-b1.0.1"
-    url = "https://awslabs.github.io/kubeflow-manifests/release-v1.6.1-aws-b1.0.0/docs"
+    githubbranch = "release-v1.6.1-aws-b1.0.2"
+    url = "https://awslabs.github.io/kubeflow-manifests/release-v1.6.1-aws-b1.0.2/docs"
   [[params.versions]]
     version = "v1.5"
     githubbranch = "release-v1.5.1-aws-b1.0.2"

website/content/en/docs/deployment/prerequisites.md

@@ -52,10 +52,10 @@ Launch Ubuntu 18.04 cloud9 instance
 
 Clone the [`awslabs/kubeflow-manifests`](https://github.com/awslabs/kubeflow-manifests) and the [`kubeflow/manifests`](https://github.com/kubeflow/manifests) repositories and check out the release branches of your choosing.
 
-Substitute the value for `KUBEFLOW_RELEASE_VERSION`(e.g. v1.6.1) and `AWS_RELEASE_VERSION`(e.g. v1.6.1-aws-b1.0.1) with the tag or branch you want to use below. Read more about [releases and versioning]({{< ref "/docs/about/releases.md" >}}) if you are unsure about what these values should be.
+Substitute the value for `KUBEFLOW_RELEASE_VERSION`(e.g. v1.6.1) and `AWS_RELEASE_VERSION`(e.g. v1.6.1-aws-b1.0.2) with the tag or branch you want to use below. Read more about [releases and versioning]({{< ref "/docs/about/releases.md" >}}) if you are unsure about what these values should be.
 ```bash
 export KUBEFLOW_RELEASE_VERSION=v1.6.1
-export AWS_RELEASE_VERSION=v1.6.1-aws-b1.0.1
+export AWS_RELEASE_VERSION=v1.6.1-aws-b1.0.2
 git clone https://github.com/awslabs/kubeflow-manifests.git && cd kubeflow-manifests
 git checkout ${AWS_RELEASE_VERSION}
 git clone --branch ${KUBEFLOW_RELEASE_VERSION} https://github.com/kubeflow/manifests.git upstream