boards: nucleo_f429zi: Update doc

Unlike documented, openocd is available on nucleo_f429zi.
Fix the doc.

Signed-off-by: Erwan Gouriou <[email protected]>

Author: erwango

boards/arm/nucleo_f429zi/doc/nucleof429zi.rst

@@ -168,8 +168,7 @@ Programming and Debugging
 *************************
 
 The Nucleo F429ZI board includes an ST-LINK/V2-1 embedded debug tool interface.
-However this interface is currently not supported by OpenOCD. You will need
-to use ST tools or an external JTAG probe.
+This interface is supported by the openocd version included in Zephyr SDK.
 
 
 .. _Nucleo F429ZI website: