Update README.md

Author: amartinhuertas

README.md

@@ -33,7 +33,9 @@ Visit one of the following pages, depending of your needs, and start enjoying!
 - [**STABLE**](https://gridap.github.io/Tutorials/stable) — **Tutorials for the most recently tagged version of Gridap.jl.**
 - [**DEVEL**](https://gridap.github.io/Tutorials/dev) — *Tutorials for the in-development version of Gridap.jl.*
 
-## Generating tutorials locally (only if you intend to contribute to the tutorials as a developer)
+## Generating tutorials locally 
+
+Note: **only if you intend to contribute to the tutorials as an advanced user/developer**
 
 If you want to contribute to the tutorials, e.g., to make changes in their sources, you might need to generate (render) them locally to see whether the changes in the sources produce the expected outcome in the output (i.e., Jupyter notebooks + HTML pages). To this end, you have to follow the following instructions once: