Fix heredoc syntax in circle.yml

> bash: line 11: warning: here-document at line 2 delimited by end-of-file (wanted `EOF')
> bash: -c: line 12: syntax error: unexpected end of file

https://198-598343-gh.circle-artifacts.com/0//tmp/circle-artifacts.pvRwaTX/stderr_mkdir_16907.txt
1 file changed