chore: remove the appendix for toJSON function (#65)

* chore: remove the appedix for toJSON function

* chore: update utils

* chore: update utils

* chore: update utils.toJSON

content/sdk/10.js/00.ethers/05.api/10.v5/00.providers/02.web3provider.md

@@ -839,20 +839,3 @@ const message = "Hello, ZKsync!";
 const signature = await signer.signMessage(message);
 console.log(`Signature: ${signature}`);
 ```
-
-## Appendix
-
-### toJSON
-
-Helper function to convert objects to JSON string with BigInt support.
-
-```ts
-function toJSON(object: any): string {
-  return JSON.stringify(object, (key, value) => {
-    if (typeof value === "bigint") {
-      return value.toString(); // Convert BigInt to string
-    }
-    return value;
-  });
-}
-```

content/sdk/10.js/00.ethers/05.api/10.v5/01.accounts/01.wallet.md

@@ -1919,8 +1919,6 @@ async getPriorityOpConfirmation(txHash: string, index: number = 0): Promise<{
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v5/providers/web3provider#tojson).
-
 ```ts
 import { Wallet, Provider, types, utils } from "zksync-ethers";
 import { ethers } from "ethers";

content/sdk/10.js/00.ethers/05.api/10.v5/01.accounts/03.l1signer.md

@@ -10,7 +10,7 @@ This class extends `ethers.providers.JsonRpcSigner` and so supports all the meth
 The easiest way to construct it is from an `Web3Provider` object.
 
 ```ts
-import { Provider, L1Signer, types } from "zksync-ethers";
+import { Provider, L1Signer, types, utils } from "zksync-ethers";
 import { ethers } from "ethers";
 
 const provider = new ethers.providers.Web3Provider(window.ethereum);
@@ -1073,8 +1073,6 @@ async getPriorityOpConfirmation(txHash: string, index: number = 0): Promise<{
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v5/providers/web3provider#tojson).
-
 ```ts
 import { Provider, L1Signer, types } from "zksync-ethers";
 import { ethers } from "ethers";