Before:
  Save g:ale_fixers

After:
  Restore

Given help(A vim help file with badly aligned tags):
  foo      *foo*
  bar  *bar*
  baz            *bar*

Execute(Tags should be aligned at the right margin):
  let g:ale_fixers = {'help': ['align_help_tags']}
  ALEFix

Expect help(Tags should be aligned):
  foo                                                                       *foo*
  bar                                                                       *bar*
  baz                                                                       *bar*