Update README.md

Author: LebJe

README.md

@@ -5,7 +5,7 @@
 [![Build and Test on MacOS](https://github.com/LebJe/toml.lua/actions/workflows/buildAndTest-MacOS.yml/badge.svg)](https://github.com/LebJe/toml.lua/actions/workflows/buildAndTest-MacOS.yml)
 [![Build and Test on Linux](https://github.com/LebJe/toml.lua/actions/workflows/buildAndTest-Linux.yml/badge.svg)](https://github.com/LebJe/toml.lua/actions/workflows/buildAndTest-Linux.yml)
 [![Build and Test on Windows](https://github.com/LebJe/toml.lua/actions/workflows/buildAndTest-Windows.yml/badge.svg)](https://github.com/LebJe/toml.lua/actions/workflows/buildAndTest-Windows.yml)
-[![LuaRocks](https://img.shields.io/luarocks/v/LebJe/toml?color=blue&label=LuaRocks)](https://luarocks.org/modules/LebJe/toml)
+[![LuaRocks](https://img.shields.io/luarocks/v/LebJe/toml?color=blue&label=LuaRocks&logo=Lua)](https://luarocks.org/modules/LebJe/toml)
 
 toml.lua is a [Lua](https://www.lua.org) wrapper around [toml++](https://github.com/marzer/tomlplusplus/), allowing you to parse and serialize [TOML](https://toml.io) in Lua.