Apply suggestions from code review

Co-authored-by: Alex Hoppen <alex@alexhoppen.de>

Author: vanshkamra12

Sources/DocumentationLanguageService/DocumentationLanguageService.swift

@@ -115,8 +115,7 @@ package actor DocumentationLanguageService: LanguageService, Sendable {
       throw ResponseError.requestNotImplemented(HoverRequest.self)
     }
 
-    let uri = req.textDocument.uri
-    let snapshot = try documentManager.latestSnapshot(uri)
+    let snapshot = try documentManager.latestSnapshot(req.textDocument.uri)
 
     guard snapshot.language == .swift else {
       throw ResponseError.requestNotImplemented(HoverRequest.self)
@@ -148,9 +147,7 @@ package actor DocumentationLanguageService: LanguageService, Sendable {
         catalogURL: catalogURL
       )
 
-      guard let renderNodeData = doccResponse.renderNode.data(using: .utf8) else {
-        throw ResponseError.requestNotImplemented(HoverRequest.self)
-      }
+      let renderNodeData = Array(doccResponse.renderNode.utf8)
       let renderNode = try JSONDecoder().decode(RenderNode.self, from: renderNodeData)
 
       guard let markdown = renderNodeToMarkdown(renderNode) else {
@@ -170,7 +167,7 @@ package actor DocumentationLanguageService: LanguageService, Sendable {
     for section in sections {
       if let declSection = section as? DeclarationsRenderSection,
          let declaration = declSection.declarations.first {
-        let sourceText = declaration.tokens.map { $0.text }.joined()
+        let sourceText = declaration.tokens.map(\.text).joined()
         result += "```swift\n\(sourceText)\n```\n"
       }
     }