Fix Haml syntax for adding spinner icon.

app/views/dashboard/todos/_todo.html.haml

@@ -50,12 +50,12 @@
     .todo-actions
       = link_to dashboard_todo_path(todo), method: :delete, class: 'btn btn-loading js-done-todo', data: { href: dashboard_todo_path(todo) } do
         Done
-        %i{class:"spinner"}
+        %i.spinner
       = link_to restore_dashboard_todo_path(todo), method: :patch, class: 'btn btn-loading js-undo-todo hidden', data: { href: restore_dashboard_todo_path(todo) } do
         Undo
-        %i{class:"spinner"}
+        %i.spinner
   - else
     .todo-actions
       = link_to restore_dashboard_todo_path(todo), method: :patch, class: 'btn btn-loading js-add-todo', data: { href: restore_dashboard_todo_path(todo) } do
         Add a To Do
-        %i{class:"spinner"}
+        %i.spinner

app/views/dashboard/todos/index.html.haml

@@ -28,10 +28,10 @@
         .append-right-default
           = link_to destroy_all_dashboard_todos_path(todos_filter_params), class: 'btn btn-loading js-todos-mark-all', method: :delete, data: { href: destroy_all_dashboard_todos_path(todos_filter_params) } do
             Mark all as done
-            %i{class:"spinner"}
+            %i.spinner
           = link_to bulk_restore_dashboard_todos_path, class: 'btn btn-loading js-todos-undo-all hidden', method: :patch , data: { href: bulk_restore_dashboard_todos_path(todos_filter_params) } do
             Undo mark all as done
-            %i{class:"spinner"}
+            %i.spinner
 
   .todos-filters
     .issues-details-filters.row-content-block.second-block