Fix error in man page

documentation/man_page/pwman3.1

@@ -4,6 +4,7 @@ pwman3 \- command line password manager
 .SH SYNOPSIS
 
 \fBpwman3\fP [\fIoptions\fP]
+.LP
 \fBpwman3\fP --help
 
 .SH DESCRIPTION