chore(fmt): apply cargo fmt to recent LSP changes

Pure rustfmt churn — the anchor-match, source-relative resolution,
and config-unwrap commits introduced lines that needed rustfmt
reformatting. CI's `cargo fmt --check` job was blocking on this.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

crates/nuwiki-lsp/src/config.rs

@@ -377,7 +377,13 @@ impl Config {
         // Unwrap { "nuwiki": { ... } } → { ... } so both clients work.
         let inner = value
             .as_object()
-            .and_then(|m| if m.len() == 1 { m.values().next() } else { None })
+            .and_then(|m| {
+                if m.len() == 1 {
+                    m.values().next()
+                } else {
+                    None
+                }
+            })
             .filter(|v| v.is_object())
             .unwrap_or(value);