Fix typos in comments and docstrings across torch

[frgossen]

Stack from ghstack (oldest at bottom):

• -> Fix typos in comments and docstrings across torch #185643

Correct grammar and spelling in comments and docstrings: use "an"
before vowel sounds ("an operator", "an error", "an output"), fix
"can not" → "cannot", "atleast" → "at least", and other minor
typographical errors across distributed, JIT, nn, distributions, and
other subsystems.

Authored with Claude (typo_terminator2).

[pytorch-bot]

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❌ 7 New Failures, 1 Unrelated Failure

As of commit 96c861b with merge base da82e7d ():

NEW FAILURES - The following jobs have failed:

• trunk / linux-jammy-rocm-py3.10-mi355 / test (distributed, 3, 4, linux.rocm.gpu.gfx950.2) (gh)
  distributed/test_c10d_nccl.py::DistributedDataParallelTest::test_nccl_backend_1gpu_module_device_ids_torch_device_list
• trunk / macos-py3-arm64 / test (default, 1, 3, macos-m1-stable) (gh)
  test/inductor/test_torchinductor_dynamic_shapes.py::DynamicShapesCpuTests::test_neg_index_dynamic_shapes_cpu
• trunk / macos-py3-arm64 / test (default, 2, 3, macos-m1-stable) (gh)
  test/inductor/test_torchinductor.py::CpuTests::test_neg_index_cpu
• trunk / macos-py3-arm64 / test (default, 3, 3, macos-m1-stable) (gh)
  test/inductor/test_torchinductor_codegen_dynamic_shapes.py::DynamicShapesCodegenCpuTests::test_neg_index_dynamic_shapes_cpu
• trunk / macos-py3-arm64 / test (mps, 1, 1, macos-m1-14) (gh)
  test/inductor/test_torchinductor_dynamic_shapes.py::DynamicShapesCpuTests::test_tmp_not_defined_issue3_dynamic_shapes_cpu
• trunk / macos-py3-arm64 / test (mps, 1, 1, macos-m2-15) (gh)
  test/inductor/test_torchinductor_dynamic_shapes.py::DynamicShapesCpuTests::test_tmp_not_defined_issue3_dynamic_shapes_cpu
• trunk / win-vs2022-cpu-py3 / build (gh)
  Process completed with exit code 1.

BROKEN TRUNK - The following job failed but were present on the merge base:

👉 Rebase onto the `viable/strict` branch to avoid these failures

• trunk / win-vs2022-cuda13.0-py3 / build (gh) (trunk failure)
  Process completed with exit code 1.

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[cyyever]

@pytorchmergebot merge -f "Linters are green"

[pytorchmergebot]

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