If you want to modify the ABOUT text, simply update its value. For example,
"ABOUT": "New About Text"
To add new resource bundle in Mobile App:
src->assets->i18n This folder contains .json files that hold the resource bundle arrays. To add a new resource bundle, create a file named {language_code}.json and add the required values.
Copy and paste the content of en.json into your new file and modify the value. It will display the default(english) value if any of the values are missing.
A proper format should be followed for example, "ACCOUNT_MERGE_CONFIRMATION_BTN_MERGE": "Merge"