fixed the typo!

4 jobs for typo in 1 minute and 55 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
passed #2550
Go-py2.7

00:01:53

passed #2551
Go-py3.4

00:01:55

passed #2552
Go-py3.5

00:01:53

passed #2553
Go-py3.6

00:01:53