docs(building-pages): use 'type' instead of 'path' in getResource fun…

[borja-sanz-sanz]

This pull request is for: (mark with an "x")

• [ ] examples/*
• [ ] modules/next
• [ ] packages/next-drupal
• [ ] starters/basic-starter
• [ ] starters/graphql-starter
• [ ] starters/pages-starter
• [X] Other

GitHub Issue: #841

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Description

In the building pages documentation, the drupal.getResource function was being called with the result of drupal.translatePath as its first parameter. However, this is incorrect because getResource requires the entity type as its first argument.

I've updated the documentation by replacing these calls with the correct entity type. The type is already stored in a constant:

const type = path.jsonapi.resourceName;

Now, `getResource` calls use this type as the first parameter.