Fix: シェアボタン用テキストにいらないスペースや改行が入っていたのを修正

[yonta]

close #692

やったこと

• シェア対象の文字列から、いらないスペースや改行を削除

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (e1b82b9) 96.57% compared to head (ed4ed46) 96.57%.

:exclamation: Current head ed4ed46 differs from pull request most recent head 2af9fb5. Consider uploading reports for the commit 2af9fb5 to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #693 +/- ## ======================================= Coverage 96.57% 96.57% ======================================= Files 17 17 Lines 321 321 ======================================= Hits 310 310 Misses 11 11 ```

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