deploy: doc: Fix ADK quickstart rendering with shortcodes (googleapis#2541)

## Description

Previously the code blocks nested under tab panes were not rendering
properly. The code included with `regionInclude` shortcode was rendering
with weird characters while that included with `include` shortcode
rendered with extra blank lines.

This PR fixes both the issues.

### Before
<img width="1628" height="828" alt="image"
src="https://github.com/user-attachments/assets/be34dbbd-6b7f-4153-8439-8df25d4c0eb5"
/>

### After
<img width="1552" height="562" alt="image"
src="https://github.com/user-attachments/assets/43e2cc33-8eea-4007-9e8a-1d436f1def0f"
/>

> [!NOTE]
> This PR also removes the license header from the Go sample code for
pre/post processing, since no other language sample code (not even the
Go sample code in quickstarts) were having license headers. Adjusted the
header checker config for the same. 182d63c

Author: pull[bot]

.nojekyll

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>About on MCP Toolbox for Databases</title><link>https://pepe57.github.io/genai-toolbox/dev/about/</link><description>Recent content in About on MCP Toolbox for Databases</description><generator>Hugo</generator><language>en</language><atom:link href="https://pepe57.github.io/genai-toolbox/dev/about/index.xml" rel="self" type="application/rss+xml"/><item><title>FAQ</title><link>https://pepe57.github.io/genai-toolbox/dev/about/faq/</link><pubDate>Mon, 01 Jan 0001 00:00:00 +0000</pubDate><guid>https://pepe57.github.io/genai-toolbox/dev/about/faq/</guid><description>&lt;h2 id="how-can-i-deploy-or-run-toolbox">How can I deploy or run Toolbox?&lt;/h2>
+&lt;p>MCP Toolbox for Databases is open-source and can be run or deployed to a
+multitude of environments. For convenience, we release &lt;a href="https://github.com/googleapis/genai-toolbox/releases/">compiled binaries and
+docker images&lt;/a> (but you can always compile yourself as well!).&lt;/p>
+&lt;p>For detailed instructions, check out these resources:&lt;/p>
+&lt;ul>
+&lt;li>&lt;a href="https://pepe57.github.io/genai-toolbox/dev/getting-started/local_quickstart/">Quickstart: How to Run Locally&lt;/a>&lt;/li>
+&lt;li>&lt;a href="https://pepe57.github.io/genai-toolbox/dev/how-to/deploy_toolbox/">Deploy to Cloud Run&lt;/a>&lt;/li>
+&lt;/ul>
+&lt;h2 id="do-i-need-a-google-cloud-accountproject-to-get-started-with-toolbox">Do I need a Google Cloud account/project to get started with Toolbox?&lt;/h2>
+&lt;p>Nope! While some of the sources Toolbox connects to may require GCP credentials,
+Toolbox doesn&amp;rsquo;t require them and can connect to a bunch of different resources
+that don&amp;rsquo;t.&lt;/p></description></item></channel></rss>

dev/404.html

@@ -0,0 +1 @@
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dev/about/faq/index.html

@@ -0,0 +1 @@
+<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Categories on MCP Toolbox for Databases</title><link>https://pepe57.github.io/genai-toolbox/dev/categories/</link><description>Recent content in Categories on MCP Toolbox for Databases</description><generator>Hugo</generator><language>en</language><atom:link href="https://pepe57.github.io/genai-toolbox/dev/categories/index.xml" rel="self" type="application/rss+xml"/></channel></rss>