doc: Replace `samples/bluetooth/peripheral` with `samples/bluetooth/peripheral_hr` in 'boards/native/nrf_bsim/doc/nrf52_bsim'

[iduhetonas]

Hello!

I'm following the Building and Running section of this page. https://docs.zephyrproject.org/latest/boards/native/nrf_bsim/doc/nrf52_bsim.html

During a livestream from @aescolar (https://www.youtube.com/watch?v=D0v3rlla9c8), he tests this as his sample: west build -b nrf52_bsim samples/bluetooth/peripheral_hr. Using WSL2 with this change in the documentation, this runs perfectly.

However, the document refers to west build -b nrf52_bsim samples/bluetooth/peripheral, which actually doesn't compile with nrf52_bsim. Besides, it seems that peripheral_hr is the intent of the sample page, since it's using samples/bluetooth/central_hr.

I'll attach the compile output of west build -b nrf52_bsim samples/bluetooth/peripheral anyway, in case that fixing this is preferred.

compile-output.txt

Environment

WSL2 using Ubuntu 22.04.5 LTS
Zephyr version: v4.0.0-rc3-63-gf7ff83079fcb

• Page: boards/native/nrf_bsim/doc/nrf52_bsim
• Version: main
• SHA-1: 8dc3f85

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