Update README.rst

README.rst

@@ -50,7 +50,7 @@ I do not know the order of the atoms
 
 Atom reordering methods can be used in cases where the atoms in the two molecules are not in the same order (**Figure 2.a**). These algorithms find the optimal mapping of atoms between the two structures to minimize RMSD.
 
-Each method has limitations because finding the best atom mapping depends on properly aligning structures. This is usually done by comparing atom-pair distances. Using the _Hungarian cost minimization for atom distance works well if the molecules are aligned. If not, you use the molecular inertia eigenvectors (**Figure 2.b**), to rotate such the eigenvectors are aligned.
+Each method has limitations because finding the best atom mapping depends on properly aligning structures. This is usually done by comparing atom-pair distances. Using the Hungarian_ cost minimization for atom distance works well if the molecules are aligned. If not, you use the molecular inertia eigenvectors (**Figure 2.b**), to rotate such the eigenvectors are aligned.
 Or, use atomic descriptors (**Figure 2.c**), independent of the coordinate system, to reorder the atoms.
 Note that all reordering methods have limitations and drawbacks, and the actual order might not be found.