minor localization change on trigger select

lib/Frontend/intnDefs.dart

@@ -32,7 +32,7 @@ String sequencesPage() => Intl.message('Custom Actions', name: 'sequencesPage',
 String sequencesPageDescription() => Intl.message('Create custom Actions for your gear', name: 'sequencesPageDescription', desc: 'The description of the sequences page link on the more page');
 
 // Triggers Page
-String triggersSelectLabel() => Intl.message('Select an Trigger Type', name: 'triggersSelectLabel', desc: 'The title of the add trigger dialog');
+String triggersSelectLabel() => Intl.message('Select a Trigger Type', name: 'triggersSelectLabel', desc: 'The title of the add trigger dialog');
 
 String triggersSelectClearLabel() => Intl.message('Remove Action', name: 'triggersSelectClearLabel', desc: 'The button label on the trigger select screen for clearing the selected action');