.travis.yml in zapwhite-2.20.0 vs .travis.yml in zapwhite-2.21.0

@@ -1,9 +1,9 @@
 language: ruby
 rvm:
-  - 2.7.2
+- 2.7.2
 git:
   depth: 10
 before_install:
 - rvm install ruby-2.7.2
 - rvm use 2.7.2
-  - gem update bundler
+- gem update bundler