Disambiguate return types for older versions of Swift

Sources/Publish/Internal/HTMLGenerator.swift

@@ -48,7 +48,7 @@ private extension HTMLGenerator {
  let creationFile = try File(path: theme.creationPath.string)
  let packageFolder = try creationFile.resolveSwiftPackageFolder()
 
- return try await theme.resourcePaths.concurrentMap { path in
+ return try await theme.resourcePaths.concurrentMap { path -> Path in
  do {
  let file = try packageFolder.file(at: path.string)
  try context.copyFileToOutput(file, targetFolderPath: nil)
@@ -72,7 +72,7 @@ private extension HTMLGenerator {
  }
 
  func generateSectionHTML() async throws -> [Path] {
- try await context.sections.concurrentFlatMap { section in
+ try await context.sections.concurrentFlatMap { section -> [Path] in
  var allPaths = [Path]()
 
  let sectionPath = try outputHTML(
@@ -82,8 +82,8 @@ private extension HTMLGenerator {
  fileMode: .foldersAndIndexFiles
  )
  allPaths.append(sectionPath)
- 
- let sectionItemPaths = try await section.items.concurrentMap { item in
+
+ let sectionItemPaths = try await section.items.concurrentMap { item -> Path in
  try outputHTML(
  for: item,
  indentedBy: indentation,
@@ -98,7 +98,7 @@ private extension HTMLGenerator {
  }
 
  func generatePageHTML() async throws -> [Path] {
- try await context.pages.values.concurrentMap { page in
+ try await context.pages.values.concurrentMap { page -> Path in
  try outputHTML(
  for: page,
  indentedBy: indentation,
@@ -127,7 +127,7 @@ private extension HTMLGenerator {
  allPaths.append(listPath)
  }
 
- let tagPaths: [Path] = try await context.allTags.concurrentCompactMap { tag in
+ let tagPaths: [Path] = try await context.allTags.concurrentCompactMap { tag -> Path? in
  let detailsPath = context.site.path(for: tag)
  let detailsContent = config.detailsContentResolver(tag)