Add blue button in the about section

Signed-off-by: Benoit Donneaux <benoit@leastauthority.com>

src/_sass/_custom.scss

@@ -85,11 +85,6 @@
   border-radius: 20px;
 }
 
-.feature__item .btn {
-  background-color: #0075a2;
-  color: #fff;
-}
-
 .feature__item .btn:hover {
    background-color: #777;
    color: #fff;
@@ -147,8 +142,13 @@
   background-color: #fff;
 }
 
-#about .feature__item .archive__item-title {
-  padding-top: 0.5em;
+#about .feature__wrapper .btn {
+  background-color: #0075a2;
+  color: #fff;
+}
+
+#about .archive__item-title {
+  margin-top: 0.5em;
 }
 
 .feature__item--center {

src/index.html

@@ -74,6 +74,8 @@ about:
       and maintained by a group of hardy volunteers.
       We are grateful for their energy, expertise, and support.
       Check out some of the main contributors to this project!
+    url: "https://tahoe-lafs.org/trac/tahoe-lafs/wiki/AboutUs"
+    btn_label: "Our Contributors"
 ---
 <div id="documentation">
 {% include feature_row id="documentation" type="center" %}
@@ -103,7 +105,7 @@ about:
   {% endfor %}
 </div>
 </div>
-<br/><br/>
+<br/><br/><br/>
 <div id="about">
 {% include feature_row id="about" type="left" %}
 </div>