Revert "docs: conf.py: fix cve extlinks caption for sphinx <4.0"

This reverts commit c9922076f5c1285d9cfd6aff8ce5b6635d88222f.

Since the minimum version required to build the docs has been bumped in
the previous commit to 4.0, this commit is not required. Moreover, since
Sphinx 5.0 triggers a warning when extlinks captions are not using %s
substitution and Sphinx 6.0 will fail to build without the substitution
characters, this revert is now required to be able to build the docs.

Cc: Quentin Schulz <foss+yocto@0leil.net>
(From yocto-docs rev: 9db804f5c5231bee50a99730a576bff7559f9631)

Signed-off-by: Quentin Schulz <quentin.schulz@theobroma-systems.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

documentation/conf.py

@@ -90,7 +90,7 @@ rst_prolog = """
 
 # external links and substitutions
 extlinks = {
-    'cve': ('https://nvd.nist.gov/vuln/detail/CVE-%s', 'CVE-'),
+    'cve': ('https://nvd.nist.gov/vuln/detail/CVE-%s', 'CVE-%s'),
     'yocto_home': ('https://www.yoctoproject.org%s', None),
     'yocto_wiki': ('https://wiki.yoctoproject.org/wiki%s', None),
     'yocto_dl': ('https://downloads.yoctoproject.org%s', None),