[phobos] [dlang/phobos] 26ccb9: fix variable name in replaceInto example

[GitHub via phobos]

  Branch: refs/heads/MartinNowak-patch-1
  Home:   https://github.com/dlang/phobos
  Commit: 26ccb979650c5f9691c853d3d4c6861409b30855
      https://github.com/dlang/phobos/commit/26ccb979650c5f9691c853d3d4c6861409b30855
  Author: Martin Nowak <code at dawg.eu>
  Date:   2016-05-14 (Sat, 14 May 2016)

  Changed paths:
    M std/array.d

  Log Message:
  -----------
  fix variable name in replaceInto example