README: Mark v0.6 as stable

README.md

@@ -1,5 +1,5 @@
 # RVVM - The RISC-V Virtual Machine
-[![version](https://img.shields.io/badge/version-0.6--git-brightgreen?style=for-the-badge)](#-installing) [![Build](https://img.shields.io/github/actions/workflow/status/LekKit/RVVM/build.yml?branch=staging&style=for-the-badge)](https://github.com/LekKit/RVVM/actions/workflows/build.yml) [![Codacy grade](https://img.shields.io/codacy/grade/c77cc7499a784cd293fde58641ce3e46?logo=codacy&style=for-the-badge)](https://app.codacy.com/gh/LekKit/RVVM/dashboard)
+[![version](https://img.shields.io/badge/version-0.6-brightgreen?style=for-the-badge)](#-installing) [![Build](https://img.shields.io/github/actions/workflow/status/LekKit/RVVM/build.yml?branch=staging&style=for-the-badge)](https://github.com/LekKit/RVVM/actions/workflows/build.yml) [![Codacy grade](https://img.shields.io/codacy/grade/c77cc7499a784cd293fde58641ce3e46?logo=codacy&style=for-the-badge)](https://app.codacy.com/gh/LekKit/RVVM/dashboard)
 ![RISC-V Logo](https://riscv.org/wp-content/uploads/2018/09/riscv-logo-1.png "The “RISC-V” trade name is a registered trade mark of RISC-V International.")
 
 RISC-V CPU & System software implementation written in С