[en] Replace k8s.gcr.io with registry.k8s.io in blogs

Signed-off-by: Marko Mudrinić <[email protected]>

Author: xmudrii

content/en/blog/_posts/2020-01-15-Kubernetes-on-MIPS.md

@@ -119,8 +119,8 @@ Here are some of the images we built：
 - `gcr.io/kubernetes-e2e-test-images/volume/iscsi:2.0`
 - `gcr.io/kubernetes-e2e-test-images/volume/nfs:1.0`
 - `gcr.io/kubernetes-e2e-test-images/volume/rbd:1.0.1`
-- `k8s.gcr.io/etcd:3.3.15`
-- `k8s.gcr.io/pause:3.1`
+- `registry.k8s.io/etcd:3.3.15` (image changed since publication - previously used registry "k8s.gcr.io")
+- `registry.k8s.io/pause:3.1` (image changed since publication - previously used registry "k8s.gcr.io")
 
 Finally, we ran the tests and got the test result, include `e2e.log`, which showed that all test cases passed. Additionally, we submitted our test result to [k8s-conformance](https://github.com/cncf/k8s-conformance) as a [pull request](https://github.com/cncf/k8s-conformance/pull/779).
 

content/en/blog/_posts/2022-12-22-kubelet-credential-providers/index.md

@@ -69,7 +69,7 @@ in `CredentialProviderResponse`. When the value is `Image`, the kubelet will onl
 match the image of the first request. When the value is `Registry`, the kubelet will use cached credentials for any subsequent image pulls
 destined for the same registry host but using different paths (for example, `gcr.io/foo/bar` and `gcr.io/bar/foo` refer to different images
 from the same registry). Lastly, when the value is `Global`, the kubelet will use returned credentials for all images that match against
-the plugin, including images that can map to different registry hosts (for example, gcr.io vs k8s.gcr.io). The `cacheKeyType` field is required by plugin
+the plugin, including images that can map to different registry hosts (for example, gcr.io vs registry.k8s.io (previously k8s.gcr.io)). The `cacheKeyType` field is required by plugin
 implementations.
 
 ```json