Update contact email and improve code formatting across multiple pages

- Change contact email from hallo@matthias-meister.com to support@matthias-meister-webdesign.de in the contact section, Datenschutz, and Impressum pages.
- Enhance code readability by adjusting formatting and indentation in the main and section elements.
- Ensure consistent styling and structure across the affected components.

src/components/landing/contact-section.tsx

@@ -18,7 +18,7 @@ const ContactSection = () => {
           Sie tun, und wann soll sie online sein?
         </p>
         <a
-          href="mailto:hallo@matthias-meister.com"
+          href="mailto:support@matthias-meister-webdesign.de"
           className="mt-10 inline-flex items-center gap-3 bg-primary px-6 py-5 text-sm font-black uppercase tracking-[0.18em] text-primary-foreground transition hover:bg-foreground hover:text-background"
         >
           <CornerDownRight className="size-5" />
@@ -28,7 +28,7 @@ const ContactSection = () => {
       <div className="flex flex-col justify-end gap-6 bg-primary px-5 py-10 text-primary-foreground sm:px-8 lg:px-10">
         <div className="flex gap-3">
           <Mail className="size-5" />
-          <span>hallo@matthias-meister.com</span>
+          <span>support@matthias-meister-webdesign.de</span>
         </div>
         <div className="flex gap-3">
           <Phone className="size-5" />