fix some spelling and grammar errors (#1868)

* Update credit-cost.md

* Update endpoints.md

* Update _eth_newfilter-description.mdx

Author: davidjsonn

services/get-started/endpoints.md

@@ -15,7 +15,7 @@ Ensure that you replace `<YOUR-API-KEY>` with an API key from your [MetaMask Dev
 | Network           | Description             | URL                                                |
 | ----------------- | ----------------------- | -------------------------------------------------- |
 | Mainnet           | JSON-RPC over HTTPS     | `https://arbitrum-mainnet.infura.io/v3/<YOUR-API-KEY>`  |
-| Mainnet           | JSON-RPC over Websocket | `wss://arbitrum-mainnet.io/ws/v3/<YOUR-API-KEY>`        |
+| Mainnet           | JSON-RPC over WebSocket | `wss://arbitrum-mainnet.io/ws/v3/<YOUR-API-KEY>`        |
 | Testnet (Sepolia) | JSON-RPC over HTTPS     | `https://arbitrum-sepolia.infura.io/v3/<YOUR-API-KEY>`  |
 | Testnet (Sepolia) | JSON-RPC over WebSocket | `wss://arbitrum-sepolia.infura.io/ws/v3/<YOUR-API-KEY>` |
 
@@ -24,7 +24,7 @@ Ensure that you replace `<YOUR-API-KEY>` with an API key from your [MetaMask Dev
 | Network        | Description             | URL                                                |
 | -------------- | ----------------------- | -------------------------------------------------- |
 | Mainnet        | JSON-RPC over HTTPS     | `https://avalanche-mainnet.infura.io/v3/<YOUR-API-KEY>` |
-| Mainnet        | JSON-RPC over Websocket | `wss://avalanche-mainnet.io/ws/v3/<YOUR-API-KEY>`       |
+| Mainnet        | JSON-RPC over WebSocket | `wss://avalanche-mainnet.io/ws/v3/<YOUR-API-KEY>`       |
 | Testnet (Fuji) | JSON-RPC over HTTPS     | `https://avalanche-fuji.infura.io/v3/<YOUR-API-KEY>`    |
 | Testnet (Fuji) | JSON-RPC over WebSocket | `wss://avalanche-fuji.infura.io/ws/v3/<YOUR-API-KEY>`   |
 

services/get-started/pricing/credit-cost.md

@@ -78,7 +78,7 @@ a specific network, then use the default Ethereum method's credit cost.
 | `eth_protocolVersion`                     | 5           |
 | `eth_sendRawTransaction`                  | 80          |
 | `eth_sign`                                | 80          |
-| `eth_simulateV1                           | 300         |
+| `eth_simulateV1`                          | 300         |
 | `eth_submitWork`                          | 80          |
 | `eth_subscribe`                           | 5           |
 | `eth_syncing`                             | 5           |

services/reference/_partials/filter-methods/_eth_newfilter-description.mdx

@@ -1,5 +1,5 @@
 Creates a filter object based on the given filter options, to notify when the state changes (logs). To check if the state has changed, call [`eth_getFilterChanges`](../../ethereum/json-rpc-methods/filter-methods/eth_getfilterchanges.mdx).
 
 :::tip Valid for fifteen minutes
-Filter IDs will be valid for up to fifteen minutes, and can polled by any connection using the same `<YOUR-API-KEY>`.
+Filter IDs will be valid for up to fifteen minutes, and can be polled by any connection using the same `<YOUR-API-KEY>`.
 :::