feat: update Kotlin 2.0.20-RC2 release details (#4370)

* feat: update Kotlin 2.0.20-RC2 release details

* update whatsnew-eap.md

* chore: minor typos

docs/kr.tree

@@ -34,7 +34,7 @@
 
     <toc-element toc-title="What's new in Kotlin">
         <toc-element id="whatsnew20.md" toc-title="Kotlin 2.0.0" accepts-web-file-names="whatsnew.html"/>
-        <toc-element id="whatsnew-eap.md" toc-title="Kotlin 2.0.20-RC"/>
+        <toc-element id="whatsnew-eap.md" toc-title="Kotlin 2.0.20-RC2"/>
         <toc-element toc-title="Earlier versions">
             <toc-element id="whatsnew1920.md" toc-title="Kotlin 1.9.20"/>
             <toc-element id="whatsnew19.md" toc-title="Kotlin 1.9.0"/>

docs/topics/eap.md

@@ -46,13 +46,13 @@ check [our instructions on how to configure your build to support this version](
         <th>Build highlights</th>
     </tr>
     <tr>
-        <td><strong>2.0.20-RC</strong>
-            <p>Released: <strong>July 30, 2024</strong></p>
-            <p><a href="https://github.com/JetBrains/kotlin/releases/tag/v2.0.20-RC" target="_blank">Release on GitHub</a></p>
+        <td><strong>2.0.20-RC2</strong>
+            <p>Released: <strong>August 13, 2024</strong></p>
+            <p><a href="https://github.com/JetBrains/kotlin/releases/tag/v2.0.20-RC2" target="_blank">Release on GitHub</a></p>
         </td>
         <td>
             <p>A tooling release for Kotlin 2.0.0</p>
-            <p>For more details, please refer to the <a href="https://github.com/JetBrains/kotlin/releases/tag/v2.0.20-RC">changelog</a> or <a href="whatsnew-eap.md">What's new in Kotlin 2.0.20-RC</a>.</p>
+            <p>For more details, please refer to the <a href="https://github.com/JetBrains/kotlin/releases/tag/v2.0.20-RC2">changelog</a> or <a href="whatsnew-eap.md">What's new in Kotlin 2.0.20-RC2</a>.</p>
         </td>
     </tr>
 </table>