Fix descriptions for infra target data source and infra app resource

[SaiDadireddy]

Adds a fix to update stale descriptions from copy/paste.

[github-actions]

Oops! It looks like no changelog entry is attached to this PR. Please include a release note as described in https://github.com/cloudflare/terraform-provider-cloudflare/blob/master/contributing/changelog-process.md.

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[github-actions]

This functionality has been released in v4.44.0 of the Terraform Cloudflare Provider.

Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template. Thank you!