Add missing protocol upgrade tag

9e051479 · MaxXor · 98263704 · 9e051479
Commit 9e051479 authored Sep 23, 2017 by MaxXor
--- a/_data/tags.yml
+++ b/_data/tags.yml
@@ -75,3 +75,6 @@

 - slug: releases
  name: Monero Software Releases
+
+- slug: protocol upgrade
+  name: Protocol Upgrade