docs(package.json): change the file path for tsconfig.json to generate compodoc documents
docs(package.json): change the file path for tsconfig.json to generate compodoc documents

Newer versions of angular need tsconfig.json instead of tsconfig.app.json because those generate
documentation in blank.

angular-starter-kit/generator-ngx-app,angular-starter-kit/generator-ngx-app,angular-starter-kit/generator-ngx-app,ngx-rocket/generator-ngx-rocket,ngx-rocket/generator-ngx-rocket,ngx-rocket/generator-ngx-rocket,ngx-rocket/generator-ngx-rocket,angular-starter-kit/generator-ngx-app