sphinx: add links for Yocto project website

In DocBook, variables are used to create custom links (note that it is
not consistent everywhere, since some web addresses are still
hardcoded), such as YOCTO_HOME_URL, YOCTO_GIT_URL, YOCTO_WIKI_URL,
YOCTO_BUGS_URL and YOCTO_DL_URL..

In Sphinx they are replaced with extlinks.

(From yocto-docs rev: d25f3095a9d29a3355581d0743f27b2a423ad580)

Signed-off-by: Nicolas Dechesne <nicolas.dechesne@linaro.org>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/documentation/ref-manual/migration.rst b/documentation/ref-manual/migration.rst
index 31959b2845..377932e2cf 100644
--- a/documentation/ref-manual/migration.rst
+++ b/documentation/ref-manual/migration.rst
@@ -1248,8 +1248,8 @@ The following reference BSPs changes occurred:
 
 The previous reference BSPs for the ``beagleboard`` and
 ``routerstationpro`` machines are still available in a new
-``meta-yocto-bsp-old`` layer in the `Source
-Repositories <&YOCTO_GIT_URL;>`__ at
+``meta-yocto-bsp-old`` layer in the
+:yocto_git:`Source Repositories <>` at
 http://git.yoctoproject.org/cgit/cgit.cgi/meta-yocto-bsp-old/.
 
 Moving to the Yocto Project 1.7 Release