Fix not working links (#154)

diff --git a/landing-pages/site/layouts/_default/baseof.html b/landing-pages/site/layouts/_default/baseof.html
index e91bf36..f27c8bb 100644
--- a/landing-pages/site/layouts/_default/baseof.html
+++ b/landing-pages/site/layouts/_default/baseof.html
@@ -35,7 +35,7 @@
                     Airflow is a platform created by community to programmatically author, schedule and monitor
                     workflows.
                 </h5>
-                <a href="/install" id="header-button">
+                <a href="/install/" id="header-button">
                     {{ partial "buttons/button-filled" (dict "text" "Install") }}
                 </a>
             </div>
diff --git a/landing-pages/site/layouts/install/list.html b/landing-pages/site/layouts/install/list.html
index 3f813b3..2dba5ca 100644
--- a/landing-pages/site/layouts/install/list.html
+++ b/landing-pages/site/layouts/install/list.html
@@ -25,7 +25,7 @@
             choose the best method of installation.
         </h5>
         <p class="install--description">Remember that Apache Airflow
-            is a platform created by the <a href="/community">Community</a>
+            is a platform created by the <a href="/community/">Community</a>
             and you can join us!</p>
     </div>
     <div class="no-width-restriction">
diff --git a/landing-pages/site/layouts/partials/footer.html b/landing-pages/site/layouts/partials/footer.html
index 5841f7e..a7ea861 100644
--- a/landing-pages/site/layouts/partials/footer.html
+++ b/landing-pages/site/layouts/partials/footer.html
@@ -33,7 +33,7 @@
         </div>
         <div class="footer-section__media-section--button-with-text">
             <span class="footer-section__media-section--text">Want to be a part of Apache Airflow?</span>
-            <a href="/community">
+            <a href="/community/">
                 {{ partial "buttons/button-filled" (dict "text" "Join community") }}
             </a>
         </div>