Use class instead of classes

Author: vertism

app/views/steps/caution/conditional_end_date/edit.html.erb

@@ -6,7 +6,7 @@
     <%= govuk_error_summary %>
 
     <%= step_form @form_object do |f| %>
-      <%= f.govuk_date_field :conditional_end_date, maxlength_enabled: true, form_group: { classes: 'app-util--compact-form-group' } do
+      <%= f.govuk_date_field :conditional_end_date, maxlength_enabled: true, form_group: { class: 'app-util--compact-form-group' } do
         tag.p t('.lead_text'), class: 'govuk-body-m'
       end %>
 

app/views/steps/caution/known_date/edit.html.erb

@@ -6,7 +6,7 @@
     <%= govuk_error_summary %>
 
     <%= step_form @form_object do |f| %>
-      <%= f.govuk_date_field :known_date, maxlength_enabled: true, form_group: { classes: 'app-util--compact-form-group' } %>
+      <%= f.govuk_date_field :known_date, maxlength_enabled: true, form_group: { class: 'app-util--compact-form-group' } %>
 
       <%= render partial: 'steps/shared/approx_date_checkbox', locals: {
         form: f, attribute: :approximate_known_date

app/views/steps/conviction/compensation_payment_date/edit.html.erb

@@ -7,7 +7,7 @@
 
     <%= step_form @form_object do |f| %>
       <%= f.govuk_date_field :compensation_payment_date, maxlength_enabled: true,
-          form_group: { classes: 'app-util--compact-form-group' },
+          form_group: { class: 'app-util--compact-form-group' },
           caption: { text: f.i18n_caption } do
         tag.p t('.lead_text'), class: 'govuk-body-m'
       end %>

app/views/steps/conviction/conviction_date/edit.html.erb

@@ -6,7 +6,7 @@
     <%= govuk_error_summary %>
 
     <%= step_form @form_object do |f| %>
-      <%= f.govuk_date_field :conviction_date, maxlength_enabled: true, form_group: { classes: 'app-util--compact-form-group' } do
+      <%= f.govuk_date_field :conviction_date, maxlength_enabled: true, form_group: { class: 'app-util--compact-form-group' } do
         tag.p t('.lead_text'), class: 'govuk-body-m'
       end %>
 

app/views/steps/conviction/known_date/edit.html.erb

@@ -7,7 +7,7 @@
 
     <%= step_form @form_object do |f| %>
       <%= f.govuk_date_field :known_date, maxlength_enabled: true,
-            form_group: { classes: 'app-util--compact-form-group' },
+            form_group: { class: 'app-util--compact-form-group' },
             legend: { text: f.i18n_legend },
             caption: { text: f.i18n_caption } do
         tag.p f.i18n_lead_text, class: 'govuk-body-m'