Fix spacing after period
Fix spacing after period

Fixed spacing after period on line 100

Review URL: https://api.github.com/repos/google/traceur-compiler/issues/2066

Closes #2066.

arv/traceur-compiler,sebgod/traceur-compiler,johnjbarton/traceur-compiler,sebgod/traceur-compiler,arv/traceur-compiler,johnjbarton/traceur-compiler,google/traceur-compiler,google/traceur-compiler