fix hmac text input place holder

Author: wuriyanto48

crypsi/index.html

@@ -162,8 +162,8 @@ <h3>Hash-based message authentication code (or HMAC)</h3>
       <label for="keyInput">Enter HMAC Key:</label>
       <input type="text" id="hmacKeyInput" placeholder="Enter 32-byte key">
 
-      <label for="dataInput">Enter Data to Encrypt:</label>
-      <input type="text" id="hmacDataInput" placeholder="Enter text to encrypt">
+      <label for="dataInput">Enter Data to HASH:</label>
+      <input type="text" id="hmacDataInput" placeholder="Enter text to hash">
 
       <button onclick="hmacData()">Hash</button>