Fix markup: bogus numerical arguments that were mapped to zero

silently (troff) or under protest (groff); table column width (also
fixed some .L arguments to match actual game output); spacing in
no-fill text; stray .FI, .in and .ce messing up indentation; stray .L;
misspelled request and escape names; escaping of control and escape
characters; properly ignore form-feed; argument quoting; extra
arguments to .NF.  Still broken: .L abused for headings, which
triggers many groff warnings about negative indentation.

info/Commands/lstat.t

@@ -18,7 +18,7 @@ The report format contains the following fields:
 .in \w'unit-type\0\0'u
 .L lnd#
 the unit number
-.L unit type
+.L unit-type
 the type of unit
 .L x,y
 the unit's current location (relative to your origin),