Minor cosmetic fixes

Author: Radonirinaunimi

README.md

@@ -70,4 +70,4 @@
 - [Tutorials and examples](https://qcdlab.github.io/neopdf/examples/neopdf-pyapi/)
 
 > [!NOTE]
-> As of v0.2.0, NeoPDF is stable and will fully maintain backward compatibility.
+> As of v0.2.0, NeoPDF (and in particular its APIs) is stable and will fully maintain backward compatibility.