minor fix on instructions for config.mk
diff --git a/config.mk b/config.mk
index 1ab2da0..fbafe5a 100644
--- a/config.mk
+++ b/config.mk
@@ -20,11 +20,12 @@
################################################################################
-# Comment out the line below ('USE_SYS_DYN_MEM = yes') if you do not want to use
-# system's malloc()/calloc()/realloc()/free() for internal dynamic memory management.
+# Comment out the line below ('USE_SYS_DYN_MEM = yes'), or change it to
+# 'USE_SYS_DYN_MEM = no' if do NOT use malloc()/calloc()/realloc()/free()
+# provided by system for internal dynamic memory management.
#
-# NOTE: in that case, your program must specify your own malloc/calloc/realloc/free
-# functions via API cs_option(), using CS_OPT_MEM option type.
+# NOTE: in that case, you must specify your own malloc/calloc/realloc/free
+# functions in your program via API cs_option(), using CS_OPT_MEM option type.
USE_SYS_DYN_MEM = yes