docs: fix tagline grammar

Author: MatthewWid

docs/src/content/docs/index.mdx

@@ -4,7 +4,7 @@ title: Better SSE
 description: Dead simple, dependency-less, spec-compliant server-sent events implementation for Node, written in TypeScript.
 template: splash
 hero:
-    tagline: Dead-simple real-time server-to-client communication without WebSockets.
+    tagline: Dead simple real-time server-to-client communication without WebSockets.
     actions:
         - text: Get started
           link: /better-sse/guides/getting-started