Fix man page installation

* Fix wording in lines.1

build.sh

@@ -48,9 +48,9 @@ deb() {
     bin
     [ -d "$DEBDIR" ] && rm -f "$DISTDIR"
     (set -x; mkdir -p "$DEBDIR/usr/bin"
-             mkdir -p "$DEBDIR/usr/share/man"
+             mkdir -p "$DEBDIR/usr/share/man/man1"
              cp bin/* "$DEBDIR/usr/bin"
-             cp doc/* "$DEBDIR/usr/share/man"
+             cp doc/* "$DEBDIR/usr/share/man/man1"
              cp -r pkgsrc/DEBIAN "$DEBDIR"
              sed -i "s/%VERSION%/$VERSION/g" "$DEBDIR/DEBIAN/control"
              dpkg-deb -b "$DEBDIR")

doc/lines.1

@@ -2,25 +2,26 @@
 .SH NAME
 line \- extract lines from input
 .SH SYNOPSIS
-.B line
+.B lines
 .IR [LINES...]
 .SH DESCRIPTION
-.B line
-extracts lines from stdin. If multiple lines are provided, they will be sorted
-numerically. If the same line is specified twice, it will only be extracted
-once.
+.B lines
+extracts one or more lines from stdin. If multiple lines are provided, they will
+be sorted numerically. If the same line is specified twice, it will only be
+extracted once.
 .SH EXAMPLES
-Get the 3rd line from the file line.1
+Get the 3rd line from the file lines.1
 .PP
 .nf
 .RS
-line 3 < line.1
+lines 3 < lines.1
 .RE
 .fi
-Get the 3rd, 4th and 5th lines from the file line.1
+.PP
+Get the 3rd, 4th and 5th lines from the file lines.1
 .PP
 .nf
 .RS
-line 3 5 4 < line.1
+lines 3 5 4 < lines.1
 .RE
 .fi