Update index.html

Co-authored-by: Will Abramson <[email protected]>

Author: ottomorac

index.html

@@ -193,7 +193,7 @@ <h1>Introduction</h1>
 	<a href="https://github.com/w3c/did-spec/issues/166#issuecomment-464502719">this comment</a>.</p>
 
 	<section id="design-goals">
-		<h2>Design Goals and Rationale</h2>
+		<h2>Implementer Overview</h2>
 		<p><b>How DID resolution is used to address the needs from Software Developers:</b></p>
 		<p>
 			By invoking a <a>DID resolver</a> using the standard <code>resolve(did, resolutionOptions)</code> interface (as defined in