[ruby-cvs:73184] shyouhei:r66084 (trunk): .travis.yml: fix YAML parse error

[shyouhei at ruby-lang.org]

shyouhei	2018-11-29 11:47:36 +0900 (Thu, 29 Nov 2018)

  New Revision: 66084

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=66084

  Log:
    .travis.yml: fix YAML parse error
    
    `[` is a meta character in YAML.  `- [` starts an array,
    so it should end with `]`; but it was not.

  Modified files:
    trunk/.travis.yml