Improve logging with local URL link

revelateur.py

     print("✔️")
     for gallery in galleries:
         print(
-            f"Generating {gallery['name']} gallery ({gallery['cover_photo']['page_url']})... ",
+            (
+                f"Generating {gallery['name']} gallery "
+                f"(http://localhost:8080/{gallery['cover_photo']['page_url']})... "
+            ),
             end="",
         )
         generate_gallery(OUTPUT_DIR, gallery)