"Buttons" -> "Button".

CHANGELOG.md

@@ -3,7 +3,7 @@
 ## [0.2] - unreleased
 ### Added
 - Travis CI configuration file for automated building and testing.
-- Buttons to add the current date and time.
+- Button to add the current date and time.
 - Option to specify default values for the power and mode fields.
 - Allow UTC time to be used when creating records.
 - Allow prefixes/suffixes to be removed when looking up a callsign (e.g. "MYCALL" would be extracted from "EA3/MYCALL/M").