docs: elaborate on midway leoric component usage

[cyjake]

closes #408

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.78%. Comparing base (ffc258b) to head (54bede7).
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #428   +/-   ##
=======================================
  Coverage   96.78%   96.78%           
=======================================
  Files          45       45           
  Lines        3700     3700           
  Branches       72       72           
=======================================
  Hits         3581     3581           
  Misses        105      105           
  Partials       14       14           

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[chenhui5416]

ok