message: Fix dupe word in documentation
diff: @@ -489,7 +489,6 @@ In the future, more variables may be added. Suggestions welcome!
  The available templating functions are:
  - `toml-escape`: Escapes a string for use in a TOML file.
  - file.
  - `html-escape`: Escapes a string for use in a HTML file.
  There is more documentation available on the [Handlebars
  