Merge pull request #38 from googs1025/fix/readme

chore: fix README support volcano version

README.md

@@ -36,7 +36,7 @@ The list of prerequisites for running the Volcano device plugin is described bel
 * nvidia-docker version > 2.0 (see how to [install](https://github.com/NVIDIA/nvidia-docker) and it's [prerequisites](https://github.com/nvidia/nvidia-docker/wiki/Installation-\(version-2.0\)#prerequisites))
 * docker configured with nvidia as the [default runtime](https://github.com/NVIDIA/nvidia-docker/wiki/Advanced-topics#default-runtime).
 * Kubernetes version >= 1.16
-* Volcano verison >= 1.19
+* Volcano verison >= 1.9
 
 ## Quick Start