Add idea that a client can query multiple resolvers.

Signed-off-by: Markus Sabadello <[email protected]>

index.html

@@ -171,6 +171,7 @@ <h2>DID Resolver Architectures</h1>
 		<p class="issue" data-number="28">TODO: Describe local DID Resolvers vs. remote DID Resolvers, and trade-offs.</p>
 		<p class="issue">TODO: A DID Resolver can add a <a href="https://w3c-ccg.github.io/did-spec/#proof-optional">proof</a> to a DID Document, discuss what this does and doesn't achieve.</p>
 		<p class="issue">TODO: Discuss DID Resolution in constrained user agents such as mobile apps and browsers.</p>
+		<p class="issue">TODO: A client could query multiple remote DID Resolvers and compare results.</p>
 
 	</section>