Rewrite page(2) references to page(3).

Add description of new libmach.
diff --git a/man/man3/getfields.3 b/man/man3/getfields.3
index f361276..897fbeb 100644
--- a/man/man3/getfields.3
+++ b/man/man3/getfields.3
@@ -77,7 +77,7 @@
 of
 .IR rc (1).
 See
-.IR quote (2)
+.IR quote (3)
 for related quote-handling software.
 .PP
 .I Tokenize
@@ -91,5 +91,5 @@
 .SH SEE ALSO
 .I strtok
 in
-.IR strcat (2),
-.IR quote (2).
+.IR strcat (3),
+.IR quote (3).