More info on dataSources.mapping.entities

[sebastiantf]

It seems dataSources.mapping.entities is not strictly validated with the defined schema and would still work without issues as long as they're not empty in the manifest.

docs/website/pages/en/developing/creating-a-subgraph.mdx

Line 149 in 1761395

- `dataSources.mapping.entities`: the entities that the data source writes to the store. The schema for each entity is defined in the schema.graphql file.

It would be nice to have some more info on how exactly this config is being used, and also of the fact that its not validated with the schema