help.c: use puts() instead of printf{,_ln}() for consistency

Change code in "help.c" that used printf_ln() without format
specifiers to use puts() instead, as other existing code in the file
does. Let's also change related code to use puts() instead of the
equivalent of calling "printf" with a "%s\n" format.

This formatting-only change will make a subsequent functional change
easier to read, as it'll be changing code that's consistently using
the same functions to do the same things.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

help.c

@@ -124,7 +124,8 @@ static void print_cmd_by_category(const struct category_description *catdesc,
 		uint32_t mask = catdesc[i].category;
 		const char *desc = catdesc[i].desc;
 
-		printf("\n%s\n", _(desc));
+		putchar('\n');
+		puts(_(desc));
 		print_command_list(cmds, mask, longest);
 	}
 	free(cmds);
@@ -317,7 +318,7 @@ void list_commands(struct cmdnames *main_cmds, struct cmdnames *other_cmds)
 	}
 
 	if (other_cmds->cnt) {
-		printf_ln(_("git commands available from elsewhere on your $PATH"));
+		puts(_("git commands available from elsewhere on your $PATH"));
 		putchar('\n');
 		pretty_print_cmdnames(other_cmds, colopts);
 		putchar('\n');
@@ -439,7 +440,7 @@ void list_all_cmds_help(void)
 	struct cmdname_help *aliases;
 	int i, longest;
 
-	printf_ln(_("See 'git help <command>' to read about a specific subcommand"));
+	puts(_("See 'git help <command>' to read about a specific subcommand"));
 	print_cmd_by_category(main_categories, &longest);
 
 	list_all_other_cmds(&others);