message: Minor doc tweak
diff: @@ -196,7 +196,7 @@ cdef class SimplexTree:
  return self.get_ptr().insert(simplex, <double>filtration)
  def insert_array(self, filtrations, double max_filtration=numpy.inf):
  - """Inserts edges in an empty complex. The vertices are numbered from 0 to n, and the filtration values are
  + """Inserts edges in an empty complex. The vertices are numbered from 0 to n-1, and the filtration values are
  encoded in the array, with the diagonal representing the vertices. It is the caller's responsibility to
  ensure that this defines a filtration, which can be achieved with either::
  @@ -208,7 +208,7 @@ cdef class SimplexTree:
  filtrations = np.fmax(np.fmax(filtrations, diag[:, None]), diag[None, :])
  :param filtrations: the filtration values of the vertices and edges to insert. The matrix is assumed to be symmetric.
  - :type filtrations: numpy.ndarray of shape (n,n)
  + :type filtrations: symmetric numpy.ndarray of shape (n,n)
  :param max_filtration: only insert vertices and edges with filtration values no larger than max_filtration
  :type max_filtration: float
  """
  