chore: improve Japanese language locales (#554)

public/locales/ja/chat.json

@@ -16,7 +16,7 @@
  "Error fetching models.": "モデルの取得中にエラーが発生しました。",
  "AI": "AI",
  "You": "あなた",
- "Cancel": "Cancel",
+ "Cancel": "キャンセル",
  "Save & Submit": "Save & Submit",
  "Make sure your OpenAI API key is set in the bottom left of the sidebar.": "OpenAIのAPIキーがサイドバーの左下に設定されていることを確認してください。",
  "If you completed this step, OpenAI may be experiencing issues.": "このステップを完了した場合、OpenAIに問題が発生している可能性があります。",

public/locales/ja/promptbar.json

@@ -1,12 +1,12 @@
 {
- "New prompt": "New prompt",
- "New folder": "New folder",
- "No prompts.": "No prompts.",
- "Search prompts...": "Search prompts...",
- "Name": "Name",
- "Description": "Description",
- "A description for your prompt.": "A description for your prompt.",
- "Prompt": "Prompt",
- "Prompt content. Use {{}} to denote a variable. Ex: {{name}} is a {{adjective}} {{noun}}": "Prompt content. Use {{}} to denote a variable. Ex: {{name}} is a {{adjective}} {{noun}}",
- "Save": "Save"
+ "New prompt": "新しいプロンプト",
+ "New folder": "新しいフォルダ",
+ "No prompts.": "プロンプトはありません",
+ "Search prompts...": "プロンプトの検索...",
+ "Name": "名前",
+ "Description": "説明",
+ "A description for your prompt.": "プロンプトの説明",
+ "Prompt": "プロンプト",
+ "Prompt content. Use {{}} to denote a variable. Ex: {{name}} is a {{adjective}} {{noun}}": "プロンプトの内容。変数を表すには {{}} を使ってください。 例: {{name}} is a {{adjective}} {{noun}}",
+ "Save": "保存"
 }

public/locales/ja/sidebar.json

@@ -3,7 +3,7 @@
  "New chat": "新規チャット",
  "No conversations.": "会話履歴はありません。",
  "Search conversations...": "会話を検索...",
- "OpenAI API Key": "OpenAI API Key",
+ "OpenAI API Key": "OpenAI APIキー",
  "Import data": "会話履歴をインポート",
  "Are you sure?": "よろしいですか？",
  "Clear conversations": " 会話をクリア",