Change Validator Address type to Account Address

tips/TIP-0040/tip-0040.md

@@ -241,9 +241,36 @@ Upon the creation of a Delegation Output, the protocol assigns to it a unique id
     <td>Unique identifier of the Delegation Output, which is the BLAKE2b-256 hash of the <i>Output ID</i> that created it.</td>
   </tr>
   <tr>
-    <td>Validator Address</td>
-    <td>ByteArray[32]</td>
-    <td>The <i>Account Address</i> of the validator to which this output is delegating.</td>
+    <td valign="top">Validator Address <code>oneOf</code></td>
+    <td colspan="2">
+      <details>
+        <summary>Account Address</summary>
+        <blockquote>An Address derived from an Account ID which can be unlocked by unlocking the corresponding Account. Defined in <a href='../TIP-0038/tip-0038.md#account-address'>TIP-38 (Account Address)</a>.</blockquote>
+        <table>
+          <tr>
+            <td>
+              <b>Name</b>
+            </td>
+            <td>
+              <b>Type</b>
+            </td>
+            <td>
+              <b>Description</b>
+            </td>
+          </tr>
+          <tr>
+            <td>Address Type</td>
+            <td>uint8</td>
+            <td>Set to <strong>value 8</strong> to denote an <i>Account Address</i>.</td>
+          </tr>
+          <tr>
+            <td>Account ID</td>
+            <td>ByteArray[32]</td>
+            <td>The raw bytes of the <i>Account ID</i> which is the BLAKE2b-256 hash of the Output ID that created it.</td>
+          </tr>
+        </table>
+      </details>
+    </td>
   </tr>
   <tr>
     <td>Start Epoch</td>