Update CHANGELOG

CHANGELOG

@@ -5,7 +5,7 @@
             added perfometer for unbound_answers (NOERROR/SERVFAIL) and unbound_unwanted_replies
             WATO: fixed missing FixedValue in import
             changed Alternative titles to "Upper levels in qps"/"Upper levels in %" to better differentiate between them
-            added explicit unit "%2
+            added explicit unit "%"
             added ruleset for bakery
             renamed to unbound.py (from unbound_parameters.py)
             moved to ~/local/lib/check_mk/gui/plugins/wato/check_parameters (from local/share/check_mk/web/plugins/wato)