doc: introduction: replace NIOS II mention by Renesas RX

Remove one last (?) mention of NIOS II in the docs ; use it as an
opportunity to mention recently added support for Renesas RX.

Signed-off-by: Benjamin Cabé <benjamin@zephyrproject.org>
This commit is contained in:
Benjamin Cabé 2025-05-23 22:30:57 +02:00 committed by Benjamin Cabé
commit 3534a23c61

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@ -16,7 +16,7 @@ The Zephyr kernel supports multiple architectures, including:
- ARMv7-R, ARMv8-R (Cortex-R, 32- and 64-bit)
- Intel x86 (32- and 64-bit)
- MIPS (MIPS32 Release 1 specification)
- NIOS II Gen 2
- Renesas RX
- RISC-V (32- and 64-bit)
- SPARC V8
- Tensilica Xtensa