NarouResolver: 作品に含まれる要素のキーワードに含まれるnbspを除去

[shibafu528]

fix #1323

作品に含まれる要素によって設定されたキーワードが   区切りで出力されていて、うまくタグ分割できていなかったのを修正しました。

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 39.85%. Comparing base (84a83d4) to head (5ba8ac1).
Report is 3 commits behind head on develop.

Additional details and impacted files

@@            Coverage Diff             @@
##             develop    #1345   +/-   ##
==========================================
  Coverage      39.85%   39.85%           
  Complexity      1057     1057           
==========================================
  Files            137      137           
  Lines           3849     3849           
==========================================
  Hits            1534     1534           
  Misses          2315     2315           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

---

🚨 Try these New Features:

• Flaky Tests Detection - Detect and resolve failed and flaky tests

[unarist]

diffを読んだだけですが妥当そうに見えました