message: Remove extra empty line from CHANGELOG.
diff: @@ -91,7 +91,6 @@ Linear and nonlinear solvers
  New and updated examples and miniapps
  -------------------------------------
  -
  - Added a new example, Example 25/25p, to demonstrate the use of a Perfectly
  Matched Layer (PML) for the simulation of electromagnetic wave propagation.
  The example defines and solves several indefinite Maxwell problems.
  