[swiftnodes]

Summary

Adds SwiftNodes to the Polygon PoS infrastructure providers list.

SwiftNodes is a multi-chain RPC provider offering a free Polygon PoS RPC tier (HTTP + WebSocket) plus paid plans, under a single API key. Single-line addition to the ## Infrastructure providers list, linking the SwiftNodes Polygon landing page in the same style as the existing entries.

[swiftnodes]

Bumping this one — happy to provide any additional information or make adjustments if needed. SwiftNodes serves Polygon PoS with low-latency HTTP and WebSocket endpoints. Thanks for reviewing.

[swiftnodes]

Following up. Noting one thing so the reviewer doesn't have to discover it: this repo looks archived (polygon-docs-old), so if the right home for this entry is the current polygon-docs, say the word and I'll retarget the change there instead of waiting on a branch that no longer ships.

The addition is one line in the PoS infrastructure provider list, https://rpc.swiftnodes.io/rpc/polygon, keyless and verified (eth_chainId → 0x89).