セクションタイトルを内容に沿ったものに修正

[ulxsth]

Description

I fixed one of the section title that were not in accordance with the content.

Additional details

mozilla-japan/translation#755

[github-actions]

Preview URLs

• /ja/docs/Learn/JavaScript/First_steps/Arrays

Flaws (39)

URL: /ja/docs/Learn/JavaScript/First_steps/Arrays
Title: 配列
Flaw count: 39

• macros:
  • /ja/docs/Games/Publishing_games does not exist but fell back to /en-US/docs/Games/Publishing_games
  • /ja/docs/Learn/Tools_and_testing/Client-side_JavaScript_frameworks/React_interactivity_events_state does not exist but fell back to /en-US/docs/Learn/Tools_and_testing/Client-side_JavaScript_frameworks/React_interactivity_events_state
  • /ja/docs/Learn/Tools_and_testing/Client-side_JavaScript_frameworks/React_interactivity_filtering_conditional_rendering does not exist but fell back to /en-US/docs/Learn/Tools_and_testing/Client-side_JavaScript_frameworks/React_interactivity_filtering_conditional_rendering
  • /ja/docs/Learn/Tools_and_testing/Client-side_JavaScript_frameworks/React_accessibility does not exist but fell back to /en-US/docs/Learn/Tools_and_testing/Client-side_JavaScript_frameworks/React_accessibility
  • /ja/docs/Learn/Tools_and_testing/Client-side_JavaScript_frameworks/Ember_getting_started does not exist but fell back to /en-US/docs/Learn/Tools_and_testing/Client-side_JavaScript_frameworks/Ember_getting_started
  • and 34 more flaws omitted