From 975f7ef7001a24a8d1f5239717b3b3039035b572 Mon Sep 17 00:00:00 2001
From: Harumi Kuno <harumi.kuno@hpe.com>
Date: Mon, 30 Aug 2021 02:04:15 -0700
Subject: [PATCH] Fix typo

Cut and paste error.

Signed-off-by: Harumi Kuno <harumi.kuno@hpe.com>
---
 sphinx/writers/manpage.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sphinx/writers/manpage.py b/sphinx/writers/manpage.py
index 5421fb76314..124be7fdce5 100644
--- a/sphinx/writers/manpage.py
+++ b/sphinx/writers/manpage.py
@@ -115,7 +115,7 @@ def header(self) -> str:
                 " \"%(date)s\" \"%(version)s\" \"%(manual_group)s\"\n"
                 ".SH NAME\n")
         if self._docinfo['subtitle']:
-                "%(title)s \\- %(subtitle)s\n")
+                tmpl += "%(title)s \\- %(subtitle)s\n"
         return tmpl % self._docinfo
 
     def visit_start_of_file(self, node: Element) -> None: