Add missing Robot string to translation

Author: MTRNord

src/components/views/login/CaptchaForm.js

@@ -66,7 +66,11 @@ module.exports = React.createClass({
                 // * jumping straight to a hosted captcha page (but we don't support that yet)
                 // * embedding the captcha in an iframe (if that works)
                 // * using a better captcha lib
-                warning.innerHTML = "Robot check is currently unavailable on desktop - please use a <a href='https://riot.im/app'>web browser</a>.";
+                warning.innerHTML = _tJsx(
+                     "Robot check is currently unavailable on desktop - please use a <a>web browser</a>",
+                     /<a>(.*?)<\/a>/,
+                     (sub) => { return "<a href='https://riot.im/app'>{ sub }</a>"; }
+                 );
                 this.refs.recaptchaContainer.appendChild(warning);
             }
             else {

src/i18n/strings/en_EN.json

@@ -969,5 +969,6 @@
     "Automatically replace plain text Emoji": "Automatically replace plain text Emoji",
     "Failed to upload image": "Failed to upload image",
     "Failed to update group": "Failed to update group",
-    "Hide avatars in user and room mentions": "Hide avatars in user and room mentions"
+    "Hide avatars in user and room mentions": "Hide avatars in user and room mentions",
+    "Robot check is currently unavailable on desktop - please use a <a>web browser</a>": "Robot check is currently unavailable on desktop - please use a <a>web browser</a>"
 }