Added chains for NFT spam detection (FAQ section)

Author: jhjhjh94

website/src/pages/en/token-api/faq.mdx

@@ -296,8 +296,11 @@ There are millions of collections and we only analyze for spam on demand. If you
 
 Spam detection is currently supported for the following chains:
 
-- `mainnet`
+- `arbitrum-one`
+- `avalanche`
 - `base`
+- `mainnet`
+- `polygon`
 
 We are working on fine-tuning the model to enable more chains.