man: add compliance with FHS

extra/man/bootiso.1

@@ -751,7 +751,7 @@ This is especially prevalent with GPT partition tables.
 Copyright Jules Sam. Randolph.
 .Pp
 GPLv3 License:
-.Lk "https://www.gnu.org/licenses/gpl-3.0".
+.Lk https://www.gnu.org/licenses/gpl-3.0
 This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.
 .Sh SEE ALSO
 .\" Should be sorted by section and alphabetically
@@ -767,7 +767,7 @@ should work with any terminal emulator and the Linux console. More specifically,
 support the following features:
 .Bl -bullet
 .It
-ASCII character set.
+ASCII character set;
 .It
 ECMA-48 SGR sequences to feature color, bold and underline
 text attributes as documented in
@@ -777,10 +777,15 @@ text attributes as documented in
 .
 .Sh STANDARDS
 .Nm
-is compliant with
+is compliant with:
+.Bl -bullet
+.It
 .St "-p1003.1-2008",
 Ch. 12,
-.Dq "Utility Conventions".
+.Dq "Utility Conventions";
+.It
+Filesystem Hierarchy Standard, version 3.0.
+.El
 .
 .
 .\" .Sh HISTORY