update email template wording

templates/emails/com/onboarding/browser-extension.html

@@ -4,7 +4,7 @@
   {{ render_text("Hi " + user.name) }}
 
   {% call text() %}
-    If you want to quickly create aliases without going to SimpleLogin website, you can do that with SimpleLogin
+    If you want to quickly create aliases <b>without</b> going to SimpleLogin website, you can do that with SimpleLogin
     <a href="https://chrome.google.com/webstore/detail/simplelogin-your-anti-spa/dphilobhebphkdjbpfohgikllaljmgbn">Chrome</a>
     (or other Chromium-based browsers like Brave or Vivaldi),
     <a href="https://addons.mozilla.org/en-GB/firefox/addon/simplelogin/">Firefox</a> and