doc: application: trivial fixups to "Rebuild an Application"
doc: application: trivial fixups to "Rebuild an Application"

Make clear that a terminal is being used, and use a Sphinx :ref:
instead of a reST link.

Signed-off-by: Marti Bolivar <fd5da480b758a78208111e6ae5c6806e1f887137@opensourcefoundries.com>

zephyriot/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,kraj/zephyr,zephyrproject-rtos/zephyr,aceofall/zephyr-iotos,kraj/zephyr,zephyrproject-rtos/zephyr,mbolivar/zephyr,punitvara/zephyr,Vudentz/zephyr,finikorg/zephyr,nashif/zephyr,nashif/zephyr,ldts/zephyr,galak/zephyr,GiulianoFranchetto/zephyr,GiulianoFranchetto/zephyr,zephyrproject-rtos/zephyr,kraj/zephyr,explora26/zephyr,punitvara/zephyr,galak/zephyr,zephyriot/zephyr,mbolivar/zephyr,mbolivar/zephyr,explora26/zephyr,Vudentz/zephyr,Vudentz/zephyr,Vudentz/zephyr,zephyriot/zephyr,ldts/zephyr,mbolivar/zephyr,finikorg/zephyr,kraj/zephyr,finikorg/zephyr,punitvara/zephyr,zephyriot/zephyr,explora26/zephyr,Vudentz/zephyr,explora26/zephyr,aceofall/zephyr-iotos,ldts/zephyr,aceofall/zephyr-iotos,zephyriot/zephyr,nashif/zephyr,aceofall/zephyr-iotos,Vudentz/zephyr,finikorg/zephyr,nashif/zephyr,galak/zephyr,kraj/zephyr,GiulianoFranchetto/zephyr,ldts/zephyr,explora26/zephyr,galak/zephyr,ldts/zephyr,punitvara/zephyr,zephyrproject-rtos/zephyr,aceofall/zephyr-iotos,punitvara/zephyr,GiulianoFranchetto/zephyr,nashif/zephyr,GiulianoFranchetto/zephyr,mbolivar/zephyr