Add a bit of more description for ASF_NEXUS_TOKEN (#660)

Per apache/spark#53764

Author: HyukjinKwon

release-process.md

@@ -471,6 +471,7 @@ To create an official release, PMC members must configure GitHub Actions Secrets
 - `ASF_PASSWORD`: The password for your ASF account.
 - `ASF_NEXUS_TOKEN`: ASF Nexus API token associated with your ASF account.
   Can be found in https://repository.apache.org/#profile;User%20Token
+  It is written in `<password>...</password>` and ignore `User Code`.
 - `GPG_PRIVATE_KEY`: Your GPG private key, exported with:
   `gpg --armor --export-secret-keys ABCD1234 > private.key`.
   Make sure this key is registered with a public key server. See also [Preparing your setup](#preparing-your-setup).

site/release-process.html

@@ -635,7 +635,8 @@ <h2 id="preparing-your-github-actions-setup">Preparing your GitHub Actions setup
   <li><code class="language-plaintext highlighter-rouge">ASF_USERNAME</code>: Your Apache Software Foundation (ASF) account ID.</li>
   <li><code class="language-plaintext highlighter-rouge">ASF_PASSWORD</code>: The password for your ASF account.</li>
   <li><code class="language-plaintext highlighter-rouge">ASF_NEXUS_TOKEN</code>: ASF Nexus API token associated with your ASF account.
-Can be found in https://repository.apache.org/#profile;User%20Token</li>
+Can be found in https://repository.apache.org/#profile;User%20Token
+It is written in <code class="language-plaintext highlighter-rouge">&lt;password&gt;...&lt;/password&gt;</code> and ignore <code class="language-plaintext highlighter-rouge">User Code</code>.</li>
   <li><code class="language-plaintext highlighter-rouge">GPG_PRIVATE_KEY</code>: Your GPG private key, exported with:
 <code class="language-plaintext highlighter-rouge">gpg --armor --export-secret-keys ABCD1234 &gt; private.key</code>.
 Make sure this key is registered with a public key server. See also <a href="#preparing-your-setup">Preparing your setup</a>.</li>