fix: invalid docker push command with multiple tags

Signed-off-by: David Karlsson <[email protected]>

Author: dvdksn

content/manuals/docker-hub/repos/manage/hub-images/push.md

@@ -36,9 +36,9 @@ images with others or use them in different environments.
    Example:
 
    ```console
-   $ docker push my-app my-namespace/my-repo:v1.0
+   $ docker push my-namespace/my-repo:v1.0
    ```
 
    This command pushes the image tagged `v1.0` to the `my-namespace/my-repo` repository.
 
-3. Verify the image on Docker Hub.
+3. Verify the image on Docker Hub.