[Kst] [Kst-plot/kst] bbca81: Fix typos: a -> an

[Yuri Chornoivan]

  Branch: refs/heads/master
  Home:   https://github.com/Kst-plot/kst
  Commit: bbca81e43437d18e16f57ae5ee128553e0820579
      https://github.com/Kst-plot/kst/commit/bbca81e43437d18e16f57ae5ee128553e0820579
  Author: Yuri Chornoivan <yurchor at ukr.net>
  Date:   2014-04-04 (Fri, 04 Apr 2014)

  Changed paths:
    M src/plugins/fits/exponential_unweighted/fitexponential_unweighted.cpp
    M src/plugins/fits/exponential_unweighted/kstplugin_fits_exponential_unweighted.desktop
    M src/plugins/fits/exponential_weighted/fitexponential_weighted.cpp

  Log Message:
  -----------
  Fix typos: a -> an