システム名の修正

[blhsrwznrghfzpr]

公式（書籍）と統一

ホラーアクションRPG ブラッドムーン http://www.bouken.jp/pd/bm/
ソード・ワールド　シリーズ http://www.groupsne.co.jp/products/sw/index.html

[codecov]

Codecov Report

Merging #415 (ff8cfbd) into master (e682318) will not change coverage.
The diff coverage is 100.00%.

❗ Current head ff8cfbd differs from pull request most recent head 124c11f. Consider uploading reports for the commit 124c11f to get more accurate results

@@           Coverage Diff           @@
##           master     #415   +/-   ##
=======================================
  Coverage   95.06%   95.06%           
=======================================
  Files         284      284           
  Lines       18519    18519           
=======================================
  Hits        17606    17606           
  Misses        913      913           

Impacted Files	Coverage Δ
lib/bcdice/game_system/BloodMoon.rb	100.00% <100.00%> (ø)
lib/bcdice/game_system/SwordWorld.rb	97.26% <100.00%> (ø)
lib/bcdice/game_system/SwordWorld2_0.rb	98.11% <100.00%> (ø)
lib/bcdice/game_system/SwordWorld2_5.rb	97.61% <100.00%> (ø)

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