doc: update README.md

Author: seregazhuk

README.md

@@ -114,3 +114,9 @@ $transactionInfo = $etherscan->proxy->getTransactionByHash('0x136f818dfe87b367ee
 ```php
 $currentBlock = $etherscan->proxy->getBlockNumber();
 ```
+
+[eth_getBlockByNumber](https://docs.etherscan.io/api-reference/endpoint/ethgetblockbynumber):
+
+```php
+$blockInfo = $etherscan->proxy->getBlockByNumber('0x10d4f');
+```

src/Module/Proxy/Proxy.php

@@ -76,7 +76,7 @@ public function getBlockNumber(): BigInteger
     }
 
     /**
-     * @see https://docs.etherscan.io/api-endpoints/geth-parity-proxy#eth_getblockbynumber
+     * @see https://docs.etherscan.io/api-reference/endpoint/ethgetblockbynumber
      */
     public function getBlockByNumber(string $hexBlockNumber): BlockInfo
     {