Update configuration and content for improved SEO and user experience

- Enhanced sitemap configuration to limit entries and ensure a single sitemap generation.
- Updated robots.txt to reflect the new sitemap URL.
- Revised metadata descriptions and titles across multiple pages for better SEO alignment.
- Obfuscated email address in the footer for improved privacy.
- Adjusted content in various pages to better reflect services offered and enhance clarity.

src/pages/contact.astro

@@ -5,7 +5,8 @@ import ContactUs from '~/components/widgets/Contact.astro';
 import Features2 from '~/components/widgets/Features2.astro';
 
 const metadata = {
-  title: 'Contact',
+  title: 'Contact Richard Bergsma | IT Systems & Automation | 365DevNet',
+  description: 'Contact Richard Bergsma for IT systems & automation support. Microsoft 365, Power Automate, and cloud solutions for your business.'
 };
 ---