Added missing "Buy us a coffee!" button

Signed-off-by: Jean-Baptiste Bianchi <[email protected]>

Author: JBBianchi

src/pages/index.astro

@@ -161,6 +161,7 @@ do:
 
   <!-- Sponsors -->
   <Section title="Support our Project" subTitle="Our sponsors, along with our community, help our project grow and stay vendor-neutral through their donations." class="bg-base-200">
+    <p class="text-center"><a class="btn btn-accent btn-sm" href="https://crowdfunding.lfx.linuxfoundation.org/projects/beb979ae-75b5-4589-a2d0-f82949253bb7">Buy us a coffee!</a></p>
     <div class="mx-auto w-full md:w-1/2 lg:w-1/3 card text-center">
       <Card title="Neuroglia" image="img/logos/neuroglia.png" imageSize="medium">
         <p>Neuroglia is a consultancy and solution design company for the digital transformation of companies and their services.</p>