basic: Use hyphens in missing header names instead of underscores

src/shared/conf-parser.c

@@ -24,7 +24,7 @@
 #include "in-addr-prefix-util.h"
 #include "ip-protocol-list.h"
 #include "log.h"
-#include "missing_network.h"
+#include "missing-network.h"
 #include "nulstr-util.h"
 #include "parse-helpers.h"
 #include "parse-util.h"

src/shared/loopback-setup.c

@@ -7,7 +7,7 @@
 #include "errno-util.h"
 #include "log.h"
 #include "loopback-setup.h"
-#include "missing_network.h"
+#include "missing-network.h"
 #include "time-util.h"
 
 #define LOOPBACK_SETUP_TIMEOUT_USEC (5 * USEC_PER_SEC)