Clean up tests to stop people copy and pasting the wrong examples

test/handler/test_dogma_handler.vader

@@ -1,6 +1,11 @@
-Execute(The dogma handler should parse lines correctly):
+Before:
   runtime ale_linters/elixir/dogma.vim
 
+After:
+  call ale#linter#Reset()
+
+Execute(The dogma handler should parse lines correctly):
+
   AssertEqual
   \ [
   \   {
@@ -23,6 +28,3 @@ Execute(The dogma handler should parse lines correctly):
   \   'lib/filename.ex:18:5: C: Some error',
   \   'lib/filename.ex:19:7: R: Some warning',
   \ ])
-
-After:
-  call ale#linter#Reset()