Fixing grammar in docs

[SaschaPeukert]

This is mainly about the difference between bytes store and bytes stored (which I would guess is the correct thing)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.08%. Comparing base (901589e) to head (4319821).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #393   +/-   ##
=======================================
  Coverage   89.08%   89.08%           
=======================================
  Files          15       15           
  Lines         797      797           
=======================================
  Hits          710      710           
  Misses         73       73           
  Partials       14       14           

Files	Coverage Δ
bigcache.go	92.36% <ø> (ø)

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