[doc] Remove trailing whitespace in manpage

since "troff can be confused by blank space characters
at the end of a line." -- mdoc (7)

[ci skip]

doc/ledger.1

@@ -333,7 +333,7 @@ Anonymize registry output, mostly for sending in bug reports.
 .It Fl \-auto-match
 .It Fl \-aux-date
 Show auxiliary dates for all calculations.
-Alias for 
+Alias for
 .Fl \-effective
 .It Fl \-average Pq Fl A
 Print average values over the number of transactions instead of
@@ -501,7 +501,7 @@ Print the first
 .Ar INT
 entries. Opposite of
 .Fl \-tail Ar INT .
-Alias for 
+Alias for
 .Fl \-head .
 .It Fl \-flat
 Force the full names of accounts to be used in the balance report. The
@@ -582,7 +582,7 @@ report.
 Alias for
 .Fl \-tail .
 .It Fl \-leeway Ar INT Pq Fl Z
-Alias for 
+Alias for
 .Fl \-price-expr .
 .It Fl \-limit Ar EXPR Pq Fl l
 Limit postings in calculations.
@@ -739,7 +739,7 @@ of the transaction.
 .It Fl \-related-all
 Show all postings in a transaction, similar to
 .Fl \-related
-but show 
+but show
 .Nm both sides
 of each transaction.
 .It Fl \-revalued
@@ -984,7 +984,7 @@ for example:
 .Pp
 .Sh ENTRIES
 .Pp
-.Sh FORMATS 
+.Sh FORMATS
 .Pp
 .Sh DEBUG COMMANDS
 In addition to the regular reporting commands, Ledger also accepts several