Update script-composer.mdx

Author: WGB5445

apps/nextra/pages/en/build/sdks/ts-sdk/building-transactions/script-composer.mdx

@@ -27,7 +27,7 @@ const transaction = await aptos.transaction.build.scriptComposer({
         // invoke 0x1::coin::withdraw. This function would return a value of a `coin` type.
         const coin = await builder.addBatchedCalls({
             function: "0x1::coin::withdraw",
-            functionArguments: [CallArgument.new_signer(0), 1],
+            functionArguments: [CallArgument.newSigner(0), 1],
             typeArguments: ["0x1::aptos_coin::AptosCoin"],
         });