docs: conf.py: update yocto_git base URL

The URLs are actually redirected from
https://git.yoctoproject.org/cgit/cgit.cgi to
https://git.yoctoproject.org so let's save the user a redirection and
use the most up-to-date URL.

Cc: Quentin Schulz <foss+yocto@0leil.net>
(From yocto-docs rev: cb6dcfe92638be6c1dee647daf00cfc2191694b2)

Signed-off-by: Quentin Schulz <quentin.schulz@theobroma-systems.com>
Reviewed-by: Michael Opdenacker <michael.opdenacker@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

documentation/conf.py

@@ -98,7 +98,7 @@ extlinks = {
     'yocto_bugs': ('https://bugzilla.yoctoproject.org%s', None),
     'yocto_ab': ('https://autobuilder.yoctoproject.org%s', None),
     'yocto_docs': ('https://docs.yoctoproject.org%s', None),
-    'yocto_git': ('https://git.yoctoproject.org/cgit/cgit.cgi%s', None),
+    'yocto_git': ('https://git.yoctoproject.org%s', None),
     'yocto_sstate': ('http://sstate.yoctoproject.org%s', None),
     'oe_home': ('https://www.openembedded.org%s', None),
     'oe_lists': ('https://lists.openembedded.org%s', None),