examples: Update minio command to fix crash looping

Author: philipgough

README.md

@@ -23,6 +23,7 @@ This project is intended to be used as a library (i.e. the intent is not for you
 Though for a quickstart a compiled version of the Kubernetes [manifests](manifests) generated with this library (specifically with `example.jsonnet`) is checked into this repository in order to try the content out quickly. To try out the stack un-customized run:
  * Simply create the stack:
 ```shell
+$ kubectl create ns thanos
 $ kubectl create -f manifests/
 ```
 

examples/development-minio/deployment.yaml

@@ -19,7 +19,7 @@ spec:
         command:
         - /bin/sh
         - -c
-        - "mkdir -p /storage/thanos && /usr/bin/minio server /storage"
+        - "mkdir -p /storage/thanos && /opt/bin/minio server /storage"
         env:
         - name: MINIO_ACCESS_KEY
           value: "minio"