Update README.md

Author: CarloLucibello

README.md

@@ -37,17 +37,17 @@ Both **GraphNeuralNetworks.jl** and **GNNLux.jl** support the following features
 
 All packages are registered in the General registry, making them easy to install via the Julia package manager.
 
-For *Flux* users, run:
+For **Flux** users, run:
 ```julia
 pkg> add GraphNeuralNetworks
 ```
 
-For *Lux* users, run:
+For **Lux** users, run:
 ```julia
 pkg> add GNNLux
 ```
 
-There is no need to install **GNNGraphs** or **GNNlib** directly, as their functionality is re-exported by the frontend packages.
+There is no need to install GNNGraphs or GNNlib directly, as their functionality is re-exported by the frontend packages.
 
 ## Usage