- fix typo

Change-Id: Ie91a2b88598860742446e4a148f79d9d4d7dec44

Author: zzzeek

unreleased_changes/4.rst

@@ -1,5 +1,5 @@
 .. change::
-    :tags: bug, protocl
+    :tags: bug, protocol
     :tickets: 4
 
     Added additional resiliency to the network protocol, such that if an