Fix readme image

Author: flouthoc

README.md

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  A tiny minimal container runtime written in Rust.
  The idea is to support a minimal isolated containers without using existing runtimes, vas-quod uses linux [syscall](https://en.wikipedia.org/wiki/System_call) to achieve isolated containers { namespaces, cgroups, chroot, unshare }.
 
- ![](../blob/main/assets/vas-quod.png?raw=true)
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+ ![Image](../main/assets/vas-quod.png?raw=true) 
 
 ## Usage