man: fix systemd.special build failure

Makefile.am

@@ -672,6 +672,7 @@ MANPAGES = \
 	man/systemd.device.5 \
 	man/systemd.snapshot.5 \
 	man/systemd.exec.5 \
+	man/systemd.special.7 \
 	man/daemon.7 \
 	man/runlevel.8 \
 	man/telinit.8 \
@@ -704,9 +705,6 @@ dist_man_MANS = \
 	$(MANPAGES) \
 	$(MANPAGES_ALIAS)
 
-nodist_man_MANS = \
-	man/systemd.special.7
-
 XML_FILES = \
 	${patsubst %.1,%.xml,${patsubst %.3,%.xml,${patsubst %.5,%.xml,${patsubst %.7,%.xml,${patsubst %.8,%.xml,$(MANPAGES)}}}}}