(fix) Improve Hermes page (#421)

Author: aditya520

pages/price-feeds/api-instances-and-providers/hermes.mdx

@@ -1,22 +1,21 @@
 # Hermes
 
+Hermes is an open-source service that listens to the Pythnet and the Wormhole Network for Pyth price updates, and
+serves them via a convenient web API.
+
+Hermes allows users to easily [fetch price updates](../fetch-price-updates) via a REST API, or subscribe to a websocket for streaming
+updates.
+
 ## Public Endpoints
 
-The Pyth Data Association operates two public endpoints for Hermes, which can be used to test integrations with Pyth
+The Pyth Data Association operates a public endpoint for Hermes, which can be used to test integrations with Pyth
 Network:
 
-| Channel | URL                              |
-| ------- | -------------------------------- |
-| Stable  | https://hermes.pyth.network      |
-| Beta    | https://hermes-beta.pyth.network |
-
-Users must select a Hermes instance with the same channel (Stable / Beta) as their price feed contract.
-Stable represents the production data feeds, and Beta is a testing environment for development purposes.
-Most users should select Stable for both Hermes and the contract.
-Stable feeds are available on both mainnet and most testnets (including all EVM testnets).
+URL: https://hermes.pyth.network
 
-For production deployments, developers integrating with Pyth Network are **strongly encouraged** to host their own
-instance of Hermes or obtain a Hermes node from our RPC providers for maximum resilience and decentralization.
+For production deployments, developers integrating with Pyth Network are **strongly encouraged** to use Node Providers
+for maximum resilience and decentralization. Moreover, Hermes is designed to be self-hosted, so developers can run their own
+instance of Hermes to fetch Pyth price updates. Please note it is not recommended to use the public endpoint for production as it has rate limits.
 
 ## Node Providers