Link sponsorship page from homepage

Author: ondrejmirtes

website/src/index.njk

@@ -129,6 +129,7 @@ pageType: home
 	<div class="relative">
 	  <h2 class="text-center text-3xl leading-8 font-extrabold tracking-tight text-gray-900 sm:text-4xl">Sponsors</h2>
 	  <p class="mt-4 max-w-3xl mx-auto text-center text-xl text-gray-500">The development of PHPStan is made possible thanks to these generous companies and individuals.</p>
+	  <p class="mt-2 max-w-3xl mx-auto text-center text-md text-gray-500">Want your logo here? <a href="/sponsor" class="underscore hover:no-underscore">Learn more</a></p>
 	</div>
 
 	<div class="grid grid-flow-row-dense grid-cols-2 lg:grid-cols-3 gap-8 items-center mt-8 p-8 rounded-lg exclude-from-dark">