boards: st: stm32f429i_disc1: doc: re-work flashing section

The patch modifies the "Programming and Debugging" and "Flashing" sections
to make the documentation clearer and consistent with what is reported for
other ST boards.

Suggested-by: Abderrahmane Jarmouni <[email protected]>
Signed-off-by: Dario Binacchi <[email protected]>

Author: passgat

boards/st/stm32f429i_disc1/doc/index.rst

@@ -153,19 +153,14 @@ and host OTG operation, but only device mode has been tested with Zephyr at this
 Programming and Debugging
 *************************
 
+The STM32F429I-DISC1 Discovery kit includes a ST-LINK/V2-B embedded debug tool interface.
 Applications for the ``stm32f429i_disc1`` board configuration can be built
 and flashed in the usual way (see :ref:`build_an_application` and
 :ref:`application_run` for more details).
 
 Flashing
 ========
 
-The STM32F429I-DISC1 Discovery kit includes a ST-LINK/V2-B embedded debug tool interface.
-This interface is supported by the openocd version included in Zephyr SDK.
-
-Flashing an application to STM32F429I-DISC1
--------------------------------------------
-
 The board is configured to be flashed using west `STM32CubeProgrammer`_ runner,
 so its :ref:`installation <stm32cubeprog-flash-host-tools>` is required.