Update channel types to use consistent fixed_rate@ format in how-lazer-works

Co-Authored-By: Nidhi Singh <nidhi2894@gmail.com>

Author: devin-ai-integration[bot]

apps/developer-hub/content/docs/price-feeds/pro/how-lazer-works.mdx

@@ -59,7 +59,7 @@ It embeds aggregation logic to compute median prices, confidence intervals (usin
 
 - **WebSocket streaming**: Provides `/v1/stream` endpoint for real-time price updates
 - **HTTP REST API**: Offers `/v1/latest_price` for on-demand price queries
-- **Channel types**: Supports real-time and fixed-rate channels (50ms, 200ms, 1s)
+- **Channel types**: Supports real-time and fixed-rate channels (`fixed_rate@50ms`, `fixed_rate@200ms`, `fixed_rate@1000ms`)
 - **Multi-chain support**: Generates on-chain payloads for Solana, EVM, and other chains
 
 #### Aggregation logic