Outline textareas in red on a form submission error

This was previously done for input but not textarea.

lms/static/sass/shared/_modal.scss

@@ -155,7 +155,7 @@
           display: block;
           color: #8F0E0E;
 
-          + input {
+          + input, + textarea {
             border: 1px solid #CA1111;
             color: #8F0E0E;
           }