[Fix Accessibility Bug] improve accessibility of syntax highlighting by adding string token color (#1715)
### Fix Accessibility Bug - Improve Syntax Highlighting Colors for Code Blocks - **File Changes** code.js - Added string token color mapping to improve syntax highlighting accessibility - **Summary** This PR enhances code block syntax highlighting accessibility by adding a specific color (#db1068) for string tokens to improve visual contrast and readability. ## BEFORE <img width="600" height="199" alt="image" src="https://github.com/user-attachments/assets/32825831-8230-4e8d-a298-a19cfff7bf4d" /> <img width="180" height="437" alt="image" src="https://github.com/user-attachments/assets/e2ae8ce4-7474-45d9-9cb4-fd62eb39ae98" /> ## AFTER <img width="600" height="188" alt="image" src="https://github.com/user-attachments/assets/def9ec13-8d61-47f3-8d18-a34247d97d88" /> <img width="180" height="437" alt="image" src="https://github.com/user-attachments/assets/4bca70be-d2b6-4a81-bf0e-821e16dd2245" />