Amend JavaDoc for PathRoot

[ascopes]

Fixes #323. The previous description was misleading and incorrect for the current code-base architecture.

[codecov-commenter]

Codecov Report

Merging #324 (7c87182) into main (8c09f26) will not change coverage.
The diff coverage is n/a.

❗ Current head 7c87182 differs from pull request most recent head 5cc957f. Consider uploading reports for the commit 5cc957f to get more accurate results

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@@           Coverage Diff           @@
##             main     #324   +/-   ##
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  Coverage   78.86%   78.86%           
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  Files          90       90           
  Lines        2697     2697           
  Branches      225      225           
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  Hits         2127     2127           
  Misses        514      514           
  Partials       56       56