refactor: update authPagesConfigs name to plural form

src/app/main/authPages/authPagesConfigs.js

@@ -0,0 +1,7 @@
+import SignInConfig from './sign-in/SignInConfig';
+import SignOutConfig from './sign-out/SignOutConfig';
+import SignUpConfig from './sign-up/SignUpConfig';
+
+const authPagesConfigs = [SignInConfig, SignOutConfig, SignUpConfig];
+
+export default authPagesConfigs;