undo `` as its hard to read

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

src/components/views/dialogs/DevtoolsDialog.js

@@ -61,7 +61,7 @@ class SendCustomEvent extends React.Component {
             await this.send(content);
             message = _t('Event sent!');
         } catch (e) {
-            message = `${_t('Failed to send custom event.')} (${e.toString()})`;
+            message = _t('Failed to send custom event.') + ' (' + e.toString() + ')';
         }
         this.setState({ message });
     }