message: Update src/python/doc/installation.rst
diff: @@ -207,7 +207,7 @@ The procedure to install this library
  according to your operating system is detailed
  `here <http://doc.cgal.org/latest/Manual/installation.html>`_.
  -The following examples requires CGAL version :math:`\geq` 4.11.0:
  +The following examples require CGAL version :math:`\geq` 4.11.0:
  .. only:: builder_html
  