Fix stray '@' in message dest.

8 jobs for development in 1 minute and 48 seconds (queued for 1 second)
Status Job ID Name Coverage
  Syntax
passed #1069
syntax_erb_2-3

00:00:26

passed #1067
syntax_erb_2-4

00:00:18

passed #1068
syntax_ruby_2-3

00:00:18

passed #1066
syntax_ruby_2-4

00:00:17

 
  Linting
passed #1070
lint_ruby

00:00:32

passed #1071
lint_yaml

00:00:24

 
  Testing
passed #1073
rack_test_2-3

00:00:47

100.0%
passed #1072
rack_test_2-4

00:00:46

100.0%