update debian/ubuntu install instructions

i2p2www/pages/downloads/debian.html

@@ -6,10 +6,11 @@
 <h2 id="bionic">{{ _('Debian Sid, Ubuntu Bionic 18.04') }}</h2>
 {% trans -%}
 I2P is available in the official repositories for Ubuntu Bionic 18.04 and Debian Sid.
-Install the "i2p" package using your package manager, as you would any other package.  The instructions below are not required.
+However, the version there is older and we can not provide updates for it.
+Please use our repositories for the time being.
 {%- endtrans %}
 
-<h2 id="others">{{ _('Debian Stretch and older, Ubuntu Artful 17.10 and older') }}</h2>
+<h2 id="others">{{ _('Debian or Ubuntu, All Versions') }}</h2>
 {% trans -%}
 The Debian packages
 have been tested and <em>should </em>work on x86/x86_64 platforms running:
@@ -102,7 +103,7 @@ user to root with <code>su</code> or by prefixing each command with <code>sudo</
     </pre>
   </li>
   <li>{% trans file='/etc/apt/sources.list.d/i2p.list',file2='/etc/debian_version' %}
-    Check which version of Debian you are using on this page at the <a href="https://wiki.debian.org/LTS/" target="_blank">Debian wiki</a> 
+    Check which version of Debian you are using on this page at the <a href="https://wiki.debian.org/LTS/" target="_blank">Debian wiki</a>
     and verify with <code>{{ file2 }}</code> on your system.
     Then, add lines like the following to <code>{{ file }}</code>.{% endtrans %}<br>
 <br />