brief-yoctoprojectqs/ref-manual: Switch to new CDN

The project is switching the way handle our CDN provision of sstate objects,
update the URL accordingly.

(From yocto-docs rev: 406e8a8e30404c0538f5aa46f211540bae2b206b)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

documentation/brief-yoctoprojectqs/index.rst

@@ -253,7 +253,7 @@ an entire Linux distribution, including the toolchain, from source.
       file in the :term:`Build Directory`::
 
          BB_HASHSERVE_UPSTREAM = "wss://hashserv.yoctoproject.org/ws"
-         SSTATE_MIRRORS ?= "file://.* http://cdn.jsdelivr.net/yocto/sstate/all/PATH;downloadfilename=PATH"
+         SSTATE_MIRRORS ?= "file://.* http://sstate.yoctoproject.org/all/PATH;downloadfilename=PATH"
          BB_HASHSERVE = "auto"
          BB_SIGNATURE_HANDLER = "OEEquivHash"
 

documentation/ref-manual/variables.rst

@@ -9117,7 +9117,7 @@ system and gives an overview of their function and contents.
       The Yocto Project actually shares the cache data objects built by its
       autobuilder::
 
-         SSTATE_MIRRORS ?= "file://.* http://cdn.jsdelivr.net/yocto/sstate/all/PATH;downloadfilename=PATH"
+         SSTATE_MIRRORS ?= "file://.* http://sstate.yoctoproject.org/all/PATH;downloadfilename=PATH"
 
       As such binary artifacts are built for the generic QEMU machines
       supported by the various Poky releases, they are less likely to be