update cardano README

packages/coin-cardano/README.md

@@ -134,9 +134,9 @@ let minAda = await AdaWallet.minAda("addr1q8tx7q99lgd3upff0rtjxu437z6ddvzdjj4wr7
 ### Calculate min fee
 
 ```typescript
-import { AdaWallet } from "@okxweb3/coin-cardano" ;
+import { AdaWallet } from "@okxweb3/coin-cardano";
 
-const param: AdaParam =  {
+const param: AdaParam = {
     data: {
         type: "transfer",
         inputs: [
@@ -182,5 +182,45 @@ let signParams: SignTxParams = {
 let minFee = await AdaWallet.minFee(signParams);
 ```
 
+### Sign rawTx
+
+```typescript
+import { AdaWallet } from "@okxweb3/coin-cardano";
+
+let wallet = new AdaWallet();
+const param: AdaParam = {
+    data: {
+        type: "rawTx",
+        tx: "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" 
+    }
+}
+let signParams: SignTxParams = {
+    privateKey: "30db52f355dc57e92944cbc93e2d30c9352a096fa2bbe92f1db377d3fdc2714aa3d22e03781d5a8ffef084aa608b486454b34c68e6e402d4ad15462ee1df5b8860e14a0177329777e9eb572aa8c64c6e760a1239fd85d69ad317d57b02c3714aeb6e22ea54b3364c8aaa0dd8ee5f9cea06fa6ce22c3827b740827dd3d01fe8f3",
+    data: param
+};
+
+let signature = await wallet.signTransaction(signParams);
+```
+
+### Sign Message
+
+```typescript
+import { AdaWallet } from "@okxweb3/coin-cardano";
+
+let wallet = new AdaWallet();
+const param: AdaParam = {
+    data: {
+        address: "addr1q95y9uu3ekfwmlu3mthnjeuptu95th8m0qzqw2kexej6xgpttfhlqgwy5vavd7ggzneerhd80456j736e085zcys9y9q5frsx7", 
+        message: "1234"
+    }
+}
+let signParams: SignTxParams = {
+    privateKey: "30db52f355dc57e92944cbc93e2d30c9352a096fa2bbe92f1db377d3fdc2714aa3d22e03781d5a8ffef084aa608b486454b34c68e6e402d4ad15462ee1df5b8860e14a0177329777e9eb572aa8c64c6e760a1239fd85d69ad317d57b02c3714aeb6e22ea54b3364c8aaa0dd8ee5f9cea06fa6ce22c3827b740827dd3d01fe8f3",
+    data: param
+};
+
+let signature = await wallet.signMessage(signParams);
+```
+
 ## License
 Most packages or folder are [MIT](<https://github.com/okx/js-wallet-sdk/blob/main/LICENSE>) licensed, see package or folder for the respective license.