fix example and form labels

Author: mikesndrs

app/views/events/_form.html.erb

@@ -108,7 +108,7 @@
   <% if TeSS::Config.feature['controlled_vocabulary_vars'].include? 'target_audience' %>
     <%= f.dropdown :target_audience,
                   options: TargetAudienceDictionary.instance.options_for_select,
-                  label: 'Target Audience',
+                  label: 'Target audiences',
                   errors: @event.errors[:target_audience],
                   title: t('events.hints.targets') %>
   <% else %>

app/views/materials/_form.html.erb

@@ -79,7 +79,7 @@
   <% if TeSS::Config.feature['controlled_vocabulary_vars'].include? 'target_audience' %>
     <%= f.dropdown :target_audience,
                   options: TargetAudienceDictionary.instance.options_for_select,
-                  label: 'Target Audience',
+                  label: 'Target audiences',
                   errors: @material.errors[:target_audience],
                   title: t('events.hints.targets'),
                   visibility_toggle: TeSS::Config.feature['materials_disabled'] %>

config/tess.example.yml

@@ -166,7 +166,7 @@ default: &default
     bioschemas_testing: false
     collection_curation: true
     auto_parse_vars: [] # available features to auto parse from description: ['keywords', 'target_audience']
-    controlled_vocabulary_vars: [] # available features: ['target audience']
+    controlled_vocabulary_vars: [] # available features: ['target_audience']
 
     # User login
     invitation: false