Fix DocC @DisplayName syntax - must be inside @metadata block

The @DisplayName directive was incorrectly placed before the title.
It needs to be inside a @metadata block after the title.

Also fixed toText() doc link to include new parameters.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: kylehowells

Sources/swift-justhtml/Documentation.docc/Examples.md

@@ -26,7 +26,7 @@ swift run htmltool query "a[href]" page.html
 
 **APIs demonstrated:**
 - ``JustHTML`` - Parsing
-- ``Node/toText()`` - Text extraction
+- ``Node/toText(separator:strip:collapseWhitespace:)`` - Text extraction
 - ``Node/toHTML(pretty:indentSize:)`` - Serialization
 - ``Node/toMarkdown()`` - Markdown conversion
 - ``JustHTML/query(_:)`` - CSS selectors

Sources/swift-justhtml/Documentation.docc/justhtml.md

@@ -1,7 +1,9 @@
-@DisplayName("Swift-JustHTML")
-
 # ``justhtml``
 
+@Metadata {
+    @DisplayName("Swift-JustHTML")
+}
+
 A dependency-free HTML5 parser for Swift, following the WHATWG HTML parsing specification.
 
 ## Overview