fix: add unit of measurement to counter

[Ernst79]

fix: add unit of measurement to counter

[codecov]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (b3534f9) 54.94% compared to head (9ab8813) 54.94%.
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #56   +/-   ##
=======================================
  Coverage   54.94%   54.94%           
=======================================
  Files           5        5           
  Lines         921      921           
  Branches      191      191           
=======================================
  Hits          506      506           
  Misses        331      331           
  Partials       84       84           

Files Changed	Coverage Δ
src/xiaomi_ble/parser.py	53.57% <ø> (ø)
src/xiaomi_ble/__init__.py	100.00% <100.00%> (ø)

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