Add 'data source' and 'resource' to Terraform entries

# Feature request

## Problem Summary

when searching for Terraform resources, e.g. `aws_ecs_task_definition`, it's difficult to tell which is the 'data source' entry and which is the 'resource' entry:

this can make it significantly harder to use DevDocs for finding Terraform docs, as opposed to the official Terraform docs which denote the different resource based on a kind of 'directory' structure:

## Proposed Solution

add `(resource)` and `(data source)` suffixes to the respective listings for Terraform entries:

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happy to create a PR to implement this! would appreciate any pointers for starting files as I haven't contributed to the repo before :)

Commencez par déterminer comment les entrées Terraform sont générées et comment leurs noms sont affichés dans DevDocs. Confirmez que les métadonnées pertinentes distinguent les ressources des sources de données, puis vérifiez que les listes respectives affichent les suffixes demandés « (resource) » et « (data source) ».

Rédigé par le modèle d'indexation à partir du texte de l'issue.