Fix version number in CHANGELOG

CHANGELOG requires Major.Minor

Change-Id: I79a4b5a910053151b91c09643c3b395682d80550
diff --git a/CHANGELOG b/CHANGELOG
index 74149d2..943367e 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -8,7 +8,7 @@
   SDK:
     *
 
-v32 - 2023-02-01:
+v32.0 - 2023-02-01:
   Tracing service and probes:
     * Added an explicit TraceUuid packet. The tracing service now always
       generates a UUID, even if TraceConfig.trace_uuid_msb/lsb is empty.