Update mkdocs.yml
diff --git a/mkdocs.yml b/mkdocs.yml
index 78b8504..47b3cbf 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -82,7 +82,7 @@
location: "Hilton Portland Downtown, Portland, OR, USA"
date: "12-14 March, 2018"
- slack_url: "https://join.slack.com/t/mynewt/shared_invite/enQtNjA1MTg0NzgyNzg3LTZiYzgxNDQ3NmQ5ZWFkMTY4MjNjYTNmNGJjMDhiMmZiMWFjNDdkMzBlNzZjOWY0YzljYTBhYTg1YmRjYzljZDg"
+ slack_url: "https://mynewt.slack.com/join/shared_invite/enQtNjA1MTg0NzgyNzg3LTcyMmZiOGQzOGMxM2U4ODFmMTIwNjNmYTE5Y2UwYjQwZWIxNTE0MTUzY2JmMTEzOWFjYWZkNGM0YmM4MzAxNWQ"
copyright: "Apache Mynewt is available under Apache License, version 2.0."