fix comments

Change-Id: I8312c8404edafd6a3807d02abe1b578b33479ccf
diff --git a/common/Makedefs b/common/Makedefs
index 6cc85ab..a8ccfeb 100644
--- a/common/Makedefs
+++ b/common/Makedefs
@@ -1,4 +1,5 @@
-# service-profile/common/Makedefs
+# common/Makedefs
+# Defines commonly used Makefile variables
 
 COMMON_DIR           ?= $(dir $(abspath $(lastword $(MAKEFILE_LIST))))
 CONFIG_DIR           ?= $(COMMON_DIR)