change enum to ClientCapability for consistency

index.bs

@@ -2814,7 +2814,7 @@ This method has no arguments and returns a set of strings.
 
 <xmp class="idl">
     partial interface PublicKeyCredential {
-        static Promise<ClientCapabilities> getClientCapabilities();
+        static Promise<clientCapability> getClientCapabilities();
     };
 </xmp>
 
@@ -3987,18 +3987,18 @@ Note: The {{UserVerificationRequirement}} enumeration is deliberately not refere
         interest of minimizing disruption to the user interaction flow).
 </div>
 
-### Client Capabilities Enumeration (enum <dfn enum>ClientCapabilities</dfn>) ### {#enum-clientCapabilities}
+### Client Capability Enumeration (enum <dfn enum>ClientCapability</dfn>) ### {#enum-clientCapability}
 
 <xmp class="idl">
-    enum ClientCapabilities {
+    enum ClientCapability {
         "hybrid-transport",
         "client-pin-entry"
     };
 </xmp>
 
 This enumeration defines a limited set of client capabilities which a [=[WRP]=] may evaluate to offer certain workflows and experiences to users.
 
-<div dfn-type="enum-value" dfn-for="ClientCapabilities">
+<div dfn-type="enum-value" dfn-for="ClientCapability">
     :   <dfn>hybrid-transport</dfn>
     ::  The [=WebAuthn Client=] supports the {{AuthenticatorTransport/hybrid}} transport.