Fix typo in NEWS

Closes #746.

Author: gaborcsardi

NEWS.md

@@ -73,7 +73,7 @@
 * cli now shows progress bars after one second by default, if they
   are less than half way at the point. (Or after two seconds,
   unconditionally, as before.) See the the `cli.progress_show_after`
-  option in `?cli-config` for details (#542).
+  option in `?"cli-config"` for details (#542).
 
 * `format_inline()` now has a new argument `keep_whitespace`, and it keeps
   whitespace, including newline and form feed characters by default.