dlls/Maketest.rules.in: fix comment

[Thomas Kho]

dlls/Maketest.rules.in: fix comment

Thomas Kho

diff --git a/dlls/Maketest.rules.in b/dlls/Maketest.rules.in
index 0250b66..732ca0a 100644
--- a/dlls/Maketest.rules.in
+++ b/dlls/Maketest.rules.in
@@ -1,7 +1,7 @@
 # Global rules for building dll unit tests     -*-Makefile-*-
 #
 # Each individual makefile should define the following variables:
-# DLLTEST      : the dll to test
+# TESTDLL      : the dll to test
 # CTESTS       : list of C test programs
 # EXTRALIBS    : extra libraries to link in (optional)
 # EXTRADEFS    : extra symbol definitions, like -DWINELIB (optional)