Fix formatting at end of README

[Undo1]

No description provided.

[coveralls]

Coverage remained the same at 99.296% when pulling 7831186 on Undo1:patch-1 into 8e53812 on xmlrunner:master.

[codecov-io]

Codecov Report

Merging #154 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #154   +/-   ##
=======================================
  Coverage   99.29%   99.29%           
=======================================
  Files          17       17           
  Lines        1136     1136           
=======================================
  Hits         1128     1128           
  Misses          8        8

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[dnozay]

thank you