Fix the mailing lists links.

Fixes #36.

Signed-off-by: Tim 'mithro' Ansell <tansell@google.com>
diff --git a/docs/_templates/relbar.html b/docs/_templates/relbar.html
index ae22ae6..9e9ec9e 100644
--- a/docs/_templates/relbar.html
+++ b/docs/_templates/relbar.html
@@ -6,7 +6,7 @@
 <li class="md-tabs__item"><a href="https://gf.com/" class="md-tabs__link"><i class="md-icon">business</i> GlobalFoundries</a></li>
 <li class="md-tabs__item"><a href="https://efabless.com/open_shuttle_program" class="md-tabs__link"><i class="md-icon">precision_manufacturing</i> Shuttle Program</a></li>
 <li class="md-tabs__item"><a href="https://join.skywater.tools/" class="md-tabs__link"><i class="md-icon">chat_bubble</i> Chat</a></li>
-<li class="md-tabs__item"><a href="https://groups.google.com/g/gf180mcu-announce" class="md-tabs__link"><i class="md-icon">campaign</i>Announcements</a></li>
-<li class="md-tabs__item"><a href="https://groups.google.com/g/gf180mcu-users" class="md-tabs__link"><i class="md-icon">mail</i> Mailing List</a></li>
+<li class="md-tabs__item"><a href="https://groups.google.com/g/gf180mcu-pdk-announce" class="md-tabs__link"><i class="md-icon">campaign</i>Announcements</a></li>
+<li class="md-tabs__item"><a href="https://groups.google.com/g/gf180mcu-pdk-users" class="md-tabs__link"><i class="md-icon">mail</i> Mailing List</a></li>
 
 {%- endblock -%}