get_robust_list.2: ffix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
diff --git a/man2/get_robust_list.2 b/man2/get_robust_list.2
index b1368dd..d1b1c59 100644
--- a/man2/get_robust_list.2
+++ b/man2/get_robust_list.2
@@ -33,8 +33,8 @@
 .SH SYNOPSIS
 .nf
 .BR "#include <linux/futex.h>" \
-"    /* Definition of " "struct robust_list_head" " */"
-.BR "#include <sys/syscall.h>" "    /* Definition of " SYS_* " constants */"
+"   /* Definition of " "struct robust_list_head" " */"
+.BR "#include <sys/syscall.h>" "   /* Definition of " SYS_* " constants */"
 .B #include <unistd.h>
 .PP
 .BI "long syscall(SYS_get_robust_list, int " pid ,