message: Removed an `*`
diff: @@ -56,7 +56,7 @@ On any node, where neighbor is on the border, the neighbor is replaced with a
  For example a node with a neighborhood of only face nodes may look like this
  \sum_{a,b,c=-1}^(1,1,0) stencil(a,b,c) * u_{(i+a,j+b,k+c} = -f_k h^2 -
  -\sum_{a,b=-1}^(1,1) stencil(a,b,1) * * u_{(i+a,j+b,k+1}
  +\sum_{a,b=-1}^(1,1) stencil(a,b,1) * u_{(i+a,j+b,k+1}
  which is then solved using Ginkgo's implementation of the CG method
  preconditioned with block-Jacobi. It is also possible to specify on which
  