Fix indent for docs

[kayjan]

Description

Testing

Additional notes

Checklist

I have read through the contributing guidelines and ensured that

• I have added a descriptive title for this pull request.
• I have followed the convention and standards, and my code is checked for style and correctness.
• I have added test cases, and unit tests pass with 100% code coverage.
• I have updated the documentation and code docstrings.

Checklist (for reviewer)

• I have added label (breaking / enhancement / bug / documentation) to this pull request, if applicable.
• I will ensure this change is captured in the CHANGELOG.md file.

[github-actions]

Package	Line Rate	Branch Rate	Complexity	Health
bigtree	100%	100%	0	✔
bigtree.binarytree	100%	100%	0	✔
bigtree.dag	100%	100%	0	✔
bigtree.node	100%	100%	0	✔
bigtree.tree	100%	100%	0	✔
bigtree.utils	100%	100%	0	✔
Summary	100% (2387 / 2387)	100% (1002 / 1002)	0	✔

[github-actions]

Benchmark

Benchmark suite	Current: 6c0a9a0	Previous: 686137d	Ratio
tests/node/test_node_benchmark.py::test_node_benchmark_width_1_depth_10	15051.842307768016 iter/sec (stddev: 0.00001892040969826382)	15231.144033901444 iter/sec (stddev: 0.00001561723108014202)	1.01
tests/node/test_node_benchmark.py::test_node_benchmark_width_1_depth_100	665.364902414139 iter/sec (stddev: 0.000011425148526443324)	651.8465018823998 iter/sec (stddev: 0.000020724451228899257)	0.98
tests/node/test_node_benchmark.py::test_node_benchmark_width_1_depth_1000	11.748615800555605 iter/sec (stddev: 0.0035974770963592435)	11.883634634442128 iter/sec (stddev: 0.002729998497199175)	1.01
tests/node/test_node_benchmark.py::test_node_benchmark_width_2_depth_10	62.68774273712496 iter/sec (stddev: 0.004576798845811727)	66.76215724779271 iter/sec (stddev: 0.0033374184957460145)	1.06
tests/node/test_node_benchmark.py::test_node_benchmark_width_1_depth_10_no_assertions	22762.166093414933 iter/sec (stddev: 0.000007700180716378318)	22652.442443583754 iter/sec (stddev: 0.000008019368716182026)	1.00
tests/node/test_node_benchmark.py::test_node_benchmark_width_1_depth_100_no_assertions	1699.5043480517486 iter/sec (stddev: 0.000009101383513349951)	1627.5220488559455 iter/sec (stddev: 0.000013285829312174997)	0.96
tests/node/test_node_benchmark.py::test_node_benchmark_width_1_depth_1000_no_assertions	110.3041236909953 iter/sec (stddev: 0.003854366090829586)	111.80306837594746 iter/sec (stddev: 0.0037039860452269457)	1.01
tests/node/test_node_benchmark.py::test_node_benchmark_width_2_depth_10_no_assertions	88.9552969832684 iter/sec (stddev: 0.0039461732997618576)	91.50341055171758 iter/sec (stddev: 0.003404499524045879)	1.03

This comment was automatically generated by workflow using github-action-benchmark.