Apply suggestion from @gemini-code-assist[bot] about plural plugins

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

Author: helin24

.github/ISSUE_TEMPLATE/bug_report.md

@@ -24,7 +24,7 @@ A clear and concise description of what you expected to happen.
 If applicable, add screenshots to help explain your problem.
 
 **Version information**
- - Dart plugin version: [Find in Settings > Plugin]
+ - Dart plugin version: [Find in Settings > Plugins]
  - IDE platform version: [e.g. Android Studio Otter, IntelliJ IDEA 2025.2]
  - OS: [e.g. Mac, Windows, Linux]
  - Flutter version: [Run `flutter --version`]