Fix StandardQueryValidator initializer doc parameter name.

[anxkhn]

Type of Change

• Bug fix
• New feature
• Breaking change
• Documentation update

Motivation and Context

The doc comment on StandardQueryValidator.init documents a - Parameter delegate:,
but the initializer's only parameter is handler:

/// Create the handler.
/// - Parameter delegate: the handler that receives valid queries
public init(handler: DNSHandler) {
    self.handler = handler
}

There is no delegate parameter (the stored property is also handler). A
- Parameter <name> that names no real parameter is a documentation defect: DocC
warns on it, and the rendered API docs would show a parameter that does not exist.
This updates the parameter name in the doc comment to match the actual handler
parameter.

The surrounding prose (the type summary "Pass standard queries to a delegate
handler." and the answer(query:) comments referring to "the delegate") is left
untouched: those describe the delegation role in words and are not DocC
- Parameter directives, so they are correct as written.

Testing

• Tested locally

• Added/updated tests

• Added/updated docs

• swift build --target DNSServer succeeds; StandardQueryValidator.swift compiles
  with no diagnostics.

• swift format lint --strict reports no issues on the file, and make fmt
  (swift format) is a no-op (no formatting change).

• No test change: this is a documentation-comment-only edit with no behavioral
  effect. The - Parameter name now matches the init(handler:) signature.

---

Diff (for reference)

diff --git a/Sources/DNSServer/Handlers/StandardQueryValidator.swift b/Sources/DNSServer/Handlers/StandardQueryValidator.swift
--- a/Sources/DNSServer/Handlers/StandardQueryValidator.swift
+++ b/Sources/DNSServer/Handlers/StandardQueryValidator.swift
@@ -19,7 +19,7 @@ public struct StandardQueryValidator: DNSHandler {
     private let handler: DNSHandler
 
     /// Create the handler.
-    /// - Parameter delegate: the handler that receives valid queries
+    /// - Parameter handler: the handler that receives valid queries
     public init(handler: DNSHandler) {
         self.handler = handler
     }

1 file changed, 1 insertion(+), 1 deletion(-).