add missing docs to Makefile.am

Makefile.am

@@ -4,7 +4,8 @@ AUTOMAKE_OPTIONS = foreign 1.4
 ACLOCAL_AMFLAGS = -I m4
 EXTRA_DIST = ChangeLog COPYING LICENSE suricata.yaml \
 	doc/AUTHORS doc/GITGUIDE doc/INSTALL doc/NEWS \
-	doc/README doc/TODO classification.config
+	doc/README doc/TODO doc/INSTALL.PF_RING \
+        doc/INSTALL.WINDOWS classification.config
 if BUILD_LIBHTP
  HTP_DIR = libhtp
 endif