Fix URL and make wording express the intent more clearly.

config/chroot_local-includes/etc/whisperback/config.py

@@ -60,8 +60,7 @@ def _(string):
         return string
 
 # The right panel help (HTML string)
-# TRANSLATORS: this text can be found on
-# http://tails.boum.org/doc/tails/website/doc/first_steps/bug_reporting
+# TRANSLATORS: this text is copied straight from the Tails documentation (https://tails.boum.org/doc/first_steps/bug_reporting/), so it may be translated there already.
 html_help = _(
 """<h1>Help us fix your bug!</h1>
 <h2>How to write a useful bug report</h2>