[Doc] Better doc for SliceSampler

[vmoens]

Stack from ghstack (oldest at bottom):

• -> [Doc] Better doc for SliceSampler #2607

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/rl/2607

• 📄 Preview Python docs built from this PR

Note: Links to docs will display an error until the docs builds have been completed.

❌ 4 New Failures, 10 Unrelated Failures

As of commit e557788 with merge base c8676f4 ():

NEW FAILURES - The following jobs have failed:

• Continuous Benchmark (PR) / CPU Pytest benchmark (gh)
  FAILED ../../../../../../tmp/test_objectives_benchmarks.py::test_sac_speed[True-None] - torch._dynamo.exc.Unsupported: Graph break under GenericContextWrappingVariable
• Continuous Benchmark (PR) / GPU Pytest benchmark (gh)
  FAILED ../../../../tmp/test_objectives_benchmarks.py::test_sac_speed[True-None] - torch._dynamo.exc.Unsupported: Graph break under GenericContextWrappingVariable
• SOTA Tests on Linux / tests (3.9, 12.1) / linux-job (gh)
  RuntimeError: Command docker exec -t 3122bd6fd4a5eced6c0789cfef189b3d2fa1cb7c73e8414a60219ac10897a20d /exec failed with exit code 1
• Unit-tests on Linux / tests-olddeps (3.8, 11.6) / linux-job (gh)
  RuntimeError: Command docker exec -t f91ca87561f638a0dde15e2eaab062caf2d1d6914664f59b334950aaa86ed9d6 /exec failed with exit code 1

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

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

• Habitat Tests on Linux / tests (3.9, 12.1) / linux-job (gh) (trunk failure)
  AttributeError: _ARRAY_API not found
• Unit-tests on Linux / tests-cpu (3.10) / linux-job (gh) (trunk failure)
  test/test_cost.py::TestDiscreteSAC::test_discrete_sac_terminating[terminated2-done2-reward2-observation2-action2]
• Unit-tests on Linux / tests-cpu (3.11) / linux-job (gh) (trunk failure)
  test/test_cost.py::TestDiscreteSAC::test_discrete_sac_terminating[terminated2-done2-reward2-observation2-action2]
• Unit-tests on Linux / tests-cpu (3.12) / linux-job (gh) (trunk failure)
  test/test_cost.py::TestDiscreteSAC::test_discrete_sac_terminating[terminated2-done2-reward2-observation2-action2]
• Unit-tests on Linux / tests-cpu (3.9) / linux-job (gh) (trunk failure)
  test/test_cost.py::TestDiscreteSAC::test_discrete_sac_terminating[terminated2-done2-reward2-observation2-action2]
• Unit-tests on Linux / tests-cpu-oldget (3.12) / linux-job (gh) (trunk failure)
  test/test_cost.py::TestDiscreteSAC::test_discrete_sac_terminating[terminated2-done2-reward2-observation2-action2]
• Unit-tests on Linux / tests-gpu (3.11, 12.1) / linux-job (gh) (trunk failure)
  test/test_cost.py::TestDiscreteSAC::test_discrete_sac_terminating[terminated2-done2-reward2-observation2-action2]
• Unit-tests on Linux / tests-optdeps (3.11, 12.1) / linux-job (gh) (trunk failure)
  test/test_cost.py::TestDiscreteSAC::test_discrete_sac_terminating[terminated2-done2-reward2-observation2-action2]
• Unit-tests on Linux / tests-stable-gpu (3.10, 11.8) / linux-job (gh) (trunk failure)
  test/test_cost.py::TestDiscreteSAC::test_discrete_sac_terminating[terminated2-done2-reward2-observation2-action2]
• Unit-tests on Windows / unittests-cpu / windows-job (gh) (trunk failure)
  ##[error]Process completed with exit code 1.

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