Redesign table (#270)

https://hazelcast.atlassian.net/browse/DOC-481

Author: fantkolja

src/css/doc.css

@@ -216,6 +216,11 @@ strong.beta {
   font-size: inherit;
 }
 
+.doc .tableblock thead,
+.doc .tableblock tr:has(p>strong) {
+  background-color: var(--neutral-grey);
+}
+
 .doc a[href*="//"]:not([href*="docs.hazelcast.com"])::after,
 .home .article a[href*="//"]:not([href*="docs.hazelcast.com"])::after,
 .home .additional-cards a[href*="//"]:not([href*="docs.hazelcast.com"])::after,

src/css/vars.css

@@ -3,6 +3,7 @@
   --neutral-white: #fff;
   --neutral-lighter: #fafafa;
   --neutral: #e4e2e2;
+  --neutral-grey: #f2f2f2;
   --neutral-light: #b7c1cb;
   --secondary-text: #707482;
   --text: #041a3b;