fix: correct search DB size in docstring (2.8 MB → ~8 MB)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: mmacpherson

src/lucide/search.py

@@ -217,7 +217,7 @@ def search_icons(
 ) -> list[SearchResult]:
     """Search for icons by natural language query.
 
-    On the first call the search database is downloaded (~2.8 MB) and cached
+    On the first call the search database is downloaded (~8 MB) and cached
     in ``~/.cache/python-lucide/``.  The embedding model (~45 MB) is also
     downloaded once by *fastembed*.