Wrong file location when Overriding the Publisher Portal Theme

[TomasWso2]

Description:
defaultTheme.js and userThemes.js file locations are incorrect in the "Overriding the Publisher Portal Theme" doc.
https://apim.docs.wso2.com/en/4.2.0/reference/customize-product/customizations/overriding-the-publisher-portal-theme/
https://apim.docs.wso2.com/en/latest/reference/customize-product/customizations/overriding-the-publisher-portal-theme/

Correct locations:
publisher defaultTheme.js file can we found in <AM_HOME>/repository/deployment/server/webapps/publisher/source/src/app/data/defaultTheme.js
publisher userThemes.js can be found in <AM_HOME>/repository/deployment/server/webapps/publisher/site/public/conf/userThemes.js

Affected Product Version:
4.2.0 and 4.3.0