dev-manual: Added "recommended" for choosing native linux build host.

(From yocto-docs rev: cddc649590fc6cea74a0b78a584e00e22088541c)

Signed-off-by: Scott Rifenbark <srifenbark@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

documentation/dev-manual/dev-manual-start.xml

@@ -402,8 +402,8 @@
     <para>
         This section provides procedures to set up your development host to
         use the Yocto Project.
-        You can use the Yocto Project on a native Linux development host or
-        you can use
+        You can use the Yocto Project on a native Linux development host
+        (recommended) or you can use
         <ulink url='https://git.yoctoproject.org/cgit/cgit.cgi/crops/about/'>CROPS</ulink>,
         which leverages
         <ulink url='https://www.docker.com/'>Docker Containers</ulink>,