Fix slug extraction routine to work with different API servers
Fix slug extraction routine to work with different API servers

leafo/itchio-app,itchio/itch,itchio/itch,itchio/itch,itchio/itch,leafo/itchio-app,itchio/itch,itchio/itchio-app,itchio/itchio-app,itchio/itch,itchio/itchio-app,leafo/itchio-app