docs: update contact information and remove GitHub repository links

Replace GitHub links with direct email contact for system acquisition
across README.md and all home page Blade templates. Added
contato@syspanel.com.br as the primary contact method.

resources/views/home/about.blade.php

@@ -13,7 +13,7 @@
     <p>Developer and Creator of SysMVC</p>
     <p>Official website: <a href="https://sysmvc.syspanel.com.br">sysmvc.syspanel.com.br</a><p>
     <p>Contact email: <a href="mailto:syspanel@gmx.com">syspanel@gmx.com</a><p>
-    <p>Github: <a href="https://github.com/syspanel/SysMVC.git" target="_blank">https://github.com/syspanel/SysMVC.git</a></p>
+    <p><strong>To obtain the system, please contact us by email: <a href="mailto:contato@syspanel.com.br">contato@syspanel.com.br</a></strong></p>
 
     <hr class="my-5">