Update docs example with different copy

doc/development/documentation/index.md

@@ -238,8 +238,8 @@ is inside `_()` so it can be translated:
   link:
 
   ```haml
-  - link_start = help_link_start_html('user/permissions')
-  %p= _("This is a text describing the option/feature in a sentence. %{link_start}Learn more.%{link_end}").html_safe % { link_start: link_start, link_end: link_end_html }
+  - link_start = help_link_start_html('user/profile/account/two_factor_authentication', anchor: 'generate-new-recovery-codes-using-ssh')
+  %p= _('Alternatively, if you upload an SSH key, you can %{link_start}use that key to generate additional recovery codes%{link_end}.').html_safe % { link_start: link_start, link_end: link_end_html }
   ```
 
 - Using a button link. Useful in places where text would be out of context with