Refactor docs with internal links

[tiangolo]

📝 Refactor docs with internal links

[codecov-io]

Codecov Report

Merging #38 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master      #38      +/-   ##
==========================================
+ Coverage   99.96%   99.96%   +<.01%     
==========================================
  Files         166      166              
  Lines        2920     2924       +4     
==========================================
+ Hits         2919     2923       +4     
  Misses          1        1

Impacted Files	Coverage Δ
...test_parameter_types/test_file/test_tutorial003.py	100% <100%> (ø)	⬆️
...test_parameter_types/test_path/test_tutorial002.py	100% <100%> (ø)	⬆️
...test_parameter_types/test_file/test_tutorial005.py	100% <100%> (ø)	⬆️
...test_parameter_types/test_file/test_tutorial001.py	100% <100%> (ø)	⬆️
...test_parameter_types/test_path/test_tutorial001.py	100% <100%> (ø)	⬆️
...test_parameter_types/test_file/test_tutorial004.py	100% <100%> (ø)	⬆️
...test_parameter_types/test_file/test_tutorial002.py	100% <100%> (ø)	⬆️

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