isdb-2 tutorial: make it more 'robust'

user-doc/tutorials/others/isdb-2.txt

@@ -34,7 +34,7 @@ Given a PDB file, PLUMED is able to compute SAXS intensities for the molecule in
 While computing scattering intensities with a full atomistic representation is quite easy (see the \ref SAXS keyword and later in this tutorial), in order to adopt the hybrid coarse-grained/atomistic approach a more elaborated procedure is needed, requiring the generation of few specific files to be used as input by \ref driver. To facilitate this step, it is possible to use this script (martiniFormFactor_p2.py for python 2 or martiniFormFactor_p3.py for python 3) and type in the bash shell:
 
 \verbatim
-python martiniFormFactor_p3.py -f filepdb.pdb -dat filedat.dat [-unit Ang/nm -nq 15]
+python martiniFormFactor_p3.py -f start.pdb -dat SASDAB7.dat [-unit Ang/nm -nq 15]
 \endverbatim
 
 The input files are:
@@ -49,11 +49,11 @@ The files generated in this step, to be used later as input for \ref driver, are
 The default files generated should be sufficient to post-process single PDB files or trajectories, by typing:
 
 \verbatim
-plumed driver --plumed plumed.dat --mf_pdb file.pdb
+plumed driver --plumed plumed.dat --mf_pdb start.pdb
 \endverbatim
 or
 \verbatim
-plumed driver --plumed plumed.dat --mf_xtc file.xtc
+plumed driver --plumed plumed.dat --mf_xtc samplextc.xtc
 \endverbatim
 
 The output files generated by this step are: