db/schema.rb: Commit with underscores in date

The date gets underscores added automatically
when running migrations on the database.

Committing with the underscores so the change isn't flagged by git
when no code has been changed.

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20180613231032) do
+ActiveRecord::Schema.define(version: 2018_06_13_231032) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"