fix docker image name

Author: treezio

.github/workflows/docker.yml

@@ -19,7 +19,7 @@ jobs:
         with:
           # list of Docker images to use as base name for tags
           images: |
-            treezio/kubelet-exporter
+            treezio/kubelet-stats-exporter
           # generate Docker tags based on the following events/attributes
           tags: |
             type=ref,event=tag