Fixed numbering style enum

[freemanjp]

Was using the same value of all.

[codecov]

Codecov Report

Merging #175 into master will not change coverage.
The diff coverage is 100%.

@@           Coverage Diff           @@
##             master   #175   +/-   ##
=======================================
  Coverage       100%   100%           
  Complexity      136    136           
=======================================
  Files            70     70           
  Lines           589    589           
  Branches         33     33           
=======================================
  Hits            589    589

Impacted Files	Coverage Δ	Complexity Δ
...gn/maven/doxia/sink/kotlin/style/NumberingStyle.kt	100% <100%> (ø)	2 <0> (ø)	⬇️

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