Fix typos

README

@@ -28,7 +28,7 @@ LAMMPS is readily available on the school's Linux computers (the lmp command),
 so you should be able to do these tutorials without having to install LAMMPS
 yourself. However, if you prefer to have your own version of LAMMPS
 (e.g., for running it on your own computer), you can follow the guide on the
-official LAMMPS webpage to install the software:
+official LAMMPS web page to install the software:
 
    docs.lammps.org/Install.html
 
@@ -50,7 +50,7 @@ For more details, visit anaconda.org/conda-forge/lammps.
 
    www2.ph.ed.ac.uk/~dmarendu/LAMMPS/tutorial.html
 
-2. Davide Michieltto's tutorials on LAMMPS:
+2. Davide Michieletto's tutorials on LAMMPS:
 
    www2.ph.ed.ac.uk/~dmichiel/Lab.html (see the section 'LAMMPS intro')