Enable the verify documentation GitHub Action check

And remove the corresponding subcommand from `swift-syntax-dev-utils`.

Fixes #2987

Author: ahoppen

.github/workflows/pull_request.yml

@@ -16,10 +16,9 @@ jobs:
     uses: swiftlang/github-workflows/.github/workflows/soundness.yml@main
     with:
       license_header_check_project_name: "Swift.org"
+      docs_check_additional_arguments: "--disable-parameters-and-returns-validation"
       # https://github.com/swiftlang/swift-syntax/issues/2986
       api_breakage_check_enabled: false
-      # https://github.com/swiftlang/swift-syntax/issues/2987
-      docs_check_enabled: false
       # https://github.com/swiftlang/swift-syntax/issues/2988
       format_check_enabled: false
       # https://github.com/swiftlang/swift-syntax/issues/2989

SwiftSyntaxDevUtils/Sources/swift-syntax-dev-utils/SwiftSyntaxDevUtils.swift

@@ -30,7 +30,6 @@ struct SwiftSyntaxDevUtils: ParsableCommand {
       GenerateSourceCode.self,
       LocalPrPrecheck.self,
       Test.self,
-      VerifyDocumentation.self,
       VerifySourceCode.self,
     ]
   )