Use slack url from config
diff --git a/docs/themes/mynewt/footer.html b/docs/themes/mynewt/footer.html
index 92638d1..1388bbf 100644
--- a/docs/themes/mynewt/footer.html
+++ b/docs/themes/mynewt/footer.html
@@ -13,7 +13,7 @@
Apache Mynewt, Mynewt, Apache, the Apache feather logo, and the Apache Mynewt project logo are either
registered trademarks or trademarks of the Apache Software Foundation in the United States and other countries.
</small>
- <a href="https://join.slack.com/t/mynewt/shared_invite/enQtNjA1MTg0NzgyNzg3LTZiYzgxNDQ3NmQ5ZWFkMTY4MjNjYTNmNGJjMDhiMmZiMWFjNDdkMzBlNzZjOWY0YzljYTBhYTg1YmRjYzljZDg">
+ <a href="{{ config.extra.slack_url }}">
<img src="{{pathto("_static/img/add_to_slack.png", 1)}}" alt="Slack Icon" title="Join our Slack Community" />
</a>
</div>
diff --git a/versions/v1_4_0/mynewt-documentation/docs/themes/mynewt/footer.html b/versions/v1_4_0/mynewt-documentation/docs/themes/mynewt/footer.html
index 92638d1..1388bbf 100644
--- a/versions/v1_4_0/mynewt-documentation/docs/themes/mynewt/footer.html
+++ b/versions/v1_4_0/mynewt-documentation/docs/themes/mynewt/footer.html
@@ -13,7 +13,7 @@
Apache Mynewt, Mynewt, Apache, the Apache feather logo, and the Apache Mynewt project logo are either
registered trademarks or trademarks of the Apache Software Foundation in the United States and other countries.
</small>
- <a href="https://join.slack.com/t/mynewt/shared_invite/enQtNjA1MTg0NzgyNzg3LTZiYzgxNDQ3NmQ5ZWFkMTY4MjNjYTNmNGJjMDhiMmZiMWFjNDdkMzBlNzZjOWY0YzljYTBhYTg1YmRjYzljZDg">
+ <a href="{{ config.extra.slack_url }}">
<img src="{{pathto("_static/img/add_to_slack.png", 1)}}" alt="Slack Icon" title="Join our Slack Community" />
</a>
</div>
diff --git a/versions/v1_5_0/mynewt-documentation/docs/themes/mynewt/footer.html b/versions/v1_5_0/mynewt-documentation/docs/themes/mynewt/footer.html
index 92638d1..1388bbf 100644
--- a/versions/v1_5_0/mynewt-documentation/docs/themes/mynewt/footer.html
+++ b/versions/v1_5_0/mynewt-documentation/docs/themes/mynewt/footer.html
@@ -13,7 +13,7 @@
Apache Mynewt, Mynewt, Apache, the Apache feather logo, and the Apache Mynewt project logo are either
registered trademarks or trademarks of the Apache Software Foundation in the United States and other countries.
</small>
- <a href="https://join.slack.com/t/mynewt/shared_invite/enQtNjA1MTg0NzgyNzg3LTZiYzgxNDQ3NmQ5ZWFkMTY4MjNjYTNmNGJjMDhiMmZiMWFjNDdkMzBlNzZjOWY0YzljYTBhYTg1YmRjYzljZDg">
+ <a href="{{ config.extra.slack_url }}">
<img src="{{pathto("_static/img/add_to_slack.png", 1)}}" alt="Slack Icon" title="Join our Slack Community" />
</a>
</div>
