Reword batching var desc in README

Author: TheTeaCat

README.md

@@ -148,7 +148,7 @@ Regardless of how you add the Lambda Layer to your Lambda Function, you will als
 | FIRETAIL_API_TOKEN       | None                                                        | Your API token for the Firetail Logging API. If left unset, no logs will be sent to the Firetail Logging API |
 | FIRETAIL_API_URL         | `https://api.logging.eu-west-1.prod.firetail.app/logs/bulk` | The URL of the Firetail Logging API                          |
 | FIRETAIL_EXTENSION_DEBUG | `false`                                                     | Enables debug logging from the extension if set to a value parsed as `true` by [strconv.ParseBool](https://pkg.go.dev/strconv#ParseBool) |
-| FIRETAIL_LOG_BUFFER_SIZE | `1000`                                                      | The maximum amount of logs the extension will hold in its buffer before being batched and sent to Firetail |
+| FIRETAIL_LOG_BUFFER_SIZE | `1000`                                                      | The maximum amount of logs the extension will hold in its buffer from which logs are batched and sent to Firetail |
 | FIRETAIL_MAX_BATCH_SIZE  | `100`                                                       | The maximum size of a batch of logs to be sent to the Firetail logging API in one request |