settings_org: Use e.key instead of deprecated e.keyCode.

Tested by making sure pressing Enter in the input field of the
changed organization settings (the organization name for example)
clicks the save changes button if present.

static/js/settings_org.js

@@ -1009,7 +1009,7 @@ export function build_page() {
 
     $(".org-subsection-parent").on("keydown", "input", (e) => {
         e.stopPropagation();
-        if (e.keyCode === 13) {
+        if (e.key === "Enter") {
             e.preventDefault();
             $(e.target)
                 .closest(".org-subsection-parent")