Arm backend: Format docs in backends/arm/test/ops

[Sebastian-Larsson]

cc @digantdesai @SS-JIA @freddan80 @per @zingo @oscarandersson8218 @mansnils @robell

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/17616

• 📄 Preview Python docs built from this PR

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❌ 10 New Failures, 4 Pending

As of commit 50d5169 with merge base d130d50 ():

NEW FAILURES - The following jobs have failed:

• pull / android / run-emulator (gh)
  The process '/opt/android/sdk/platform-tools/adb' failed with exit code 224
• pull / test-mediatek-models-linux / linux-job (gh)
  RuntimeError: Command docker exec -t 24fae8a7f069b2d5a87caa6fa4361df65104782d3859e0441c9fe12d5ff9d1da /exec failed with exit code 2
• pull / test-openvino-linux / linux-job (gh)
  RuntimeError: Command docker exec -t f157fd0b3334d3e59fdf4f445a1d3a7fdd7078aed2c68907f1f8c248146dd108 /exec failed with exit code 1
• pull / test-samsung-models-linux / linux-job (gh)
  RuntimeError: Command docker exec -t e3ec5685332438061bcbeb499d5c9a18fba22d68a56b2873a11be35cfdc746ad /exec failed with exit code 1
• pull / test-samsung-quantmodels-linux / linux-job (gh)
  RuntimeError: Command docker exec -t c47432ea57780714dbb5ae5bc284a6c565162935920e98d76807b68f43aff545 /exec failed with exit code 1
• pull / unittest-buck / linux / linux-job (gh)
  RuntimeError: Command docker exec -t 08da95bc44dcf4e1f691b0c3962c672c75729235dad87885d74b5f5d1ed46f62 /exec failed with exit code 3
• pull / unittest-buck / macos / macos-job (gh)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 3
• Test CUDA Builds / check-all-cuda-builds (gh)
  Process completed with exit code 1.
• Test CUDA Builds / test-executorch-cuda-build-13.0 / linux-job (gh)
  RuntimeError: Command docker exec -t 3c934ddad0f369e17cf6788eaafa87c011226413f828ca7d302d5c04e2179920 /exec failed with exit code 1
• trunk / test-mcu-cortex-m-backend / linux-job (gh)
  RuntimeError: Command docker exec -t 44a390c3e69da2195ab1430772d58683daacba90954678f844ee9f7cbc8f9b9a /exec failed with exit code 1

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[Sebastian-Larsson]

Test failures unrelated