fix(deps): update module github.com/hashicorp/terraform-plugin-docs to v0.20.1#742

tobio merged 2 commits intomainelastic/terraform-provider-elasticstack:mainfrom

renovate/github.com-hashicorp-terraform-plugin-docs-0.xelastic/terraform-provider-elasticstack:renovate/github.com-hashicorp-terraform-plugin-docs-0.xCopy head branch name to clipboard