docs: entry pages spec names the test file the renderer tests live in

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Wc67NX9MM964uaVGn4bpZJ

Author: TMHSDigital

docs/superpowers/specs/2026-09-24-entry-pages-design.md

@@ -152,7 +152,7 @@ Site-wide:
 
 ## Testing
 
-Added to `site/checks.test.mjs` (runs in both workflows):
+Added to `site/lib/lib.test.mjs` (runs in both workflows; the spec first named `site/checks.test.mjs`):
 
 - Renderer fixtures: one accepted case per supported feature, including nested lists
   and escapes; one rejected case per unsupported block type; escaping (an entry