role :manpage: with non-digit section renders incorrect url

[Un1Gfn]

Describe the bug

In

:manpage:`name(N)`

if N is not a digit, it renders incorrectly.

How to Reproduce

conf.py

manpages_url = 'https://man.archlinux.org/man/{page}.{section}'

reST

:manpage:`termios.h(0p)`

renders

<a class="manpage reference external" href="https://man.archlinux.org/man/termios.h(0p).">termios.h(0p)</a>

where the url

https://man.archlinux.org/man/termios.h(0p).

is incorrect

Expected behavior

https://man.archlinux.org/man/termios.h.0p

Your project

https://github.com/Un1Gfn/sphinx.public

Screenshots

No response

OS

Linux 5.15.5-arch1-1 x86_64

Python version

Python 3.9.9

Sphinx version

4.3.1

Sphinx extensions

No response

Extra tools

No response

Additional context

No response