Fix a wrong path in the Makefile.
diff --git a/Doc/Makefile b/Doc/Makefile
index 1811a34..d26117b 100644
--- a/Doc/Makefile
+++ b/Doc/Makefile
@@ -55,7 +55,7 @@
 htmlhelp: BUILDER = htmlhelp
 htmlhelp: build
 	@echo "Build finished; now you can run HTML Help Workshop with the" \
-	      "build/hhp/pydoc.hhp project file."
+	      "build/htmlhelp/pydoc.hhp project file."
 
 clean:
 	-rm -rf build/*