Fix(frontend): チュートリアルを現状に合わせて修正

[penginn-net]

What

• メディアタイムラインについてを追加
• 検索許可についてを追加
• 連合無効を削除

Why

Close #566

Additional info (optional)

Checklist

• コントリビューションガイドを読みました( Read the contribution guide)
• ローカル環境で動作しました(Test working in a local environment)
• (必要なら)CHANGELOG_YOJO.mdの更新((If needed) Update CHANGELOG_YOJO.md)
• (必要なら)テストの追加((If possible) Add tests)

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 18 lines in your changes missing coverage. Please review.

Project coverage is 19.86%. Comparing base (af6ad49) to head (24980dd).

Files with missing lines	Patch %	Lines
...ntend/src/components/MkTutorialDialog.PostNote.vue	0.00%	16 Missing ⚠️
.../frontend/src/components/MkTutorialDialog.Note.vue	0.00%	1 Missing ⚠️
...tend/src/components/MkTutorialDialog.Sensitive.vue	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #586      +/-   ##
===========================================
- Coverage    19.86%   19.86%   -0.01%     
===========================================
  Files          797      797              
  Lines       123092   123108      +16     
  Branches      1041     1041              
===========================================
  Hits         24457    24457              
- Misses       98030    98046      +16     
  Partials       605      605              

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