Improved documentation

[jorgecarleitao]

Improved documentation, fixed clippy from nightly, DRY

[codecov]

Codecov Report

Merging #860 (8c70d9a) into main (f70116d) will increase coverage by 0.11%.
The diff coverage is 82.60%.

@@            Coverage Diff             @@
##             main     #860      +/-   ##
==========================================
+ Coverage   71.44%   71.56%   +0.11%     
==========================================
  Files         335      335              
  Lines       17986    17955      -31     
==========================================
- Hits        12850    12849       -1     
+ Misses       5136     5106      -30     

Impacted Files	Coverage Δ
src/bitmap/bitmap_ops.rs	87.61% <ø> (ø)
src/bitmap/mutable.rs	90.63% <ø> (ø)
src/compute/sort/mod.rs	26.66% <0.00%> (ø)
src/compute/like.rs	36.44% <57.14%> (+2.80%)	⬆️
src/io/ipc/read/common.rs	80.53% <100.00%> (ø)
src/io/json/read/infer_schema.rs	86.48% <100.00%> (ø)
src/io/json_integration/read/array.rs	79.39% <100.00%> (ø)
src/io/parquet/read/schema/convert.rs	74.34% <100.00%> (ø)
src/io/parquet/read/statistics/mod.rs	78.94% <100.00%> (ø)
src/io/parquet/write/dictionary.rs	60.39% <100.00%> (-0.39%)	⬇️
... and 2 more

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