Renameed acceptInsecureCertificates to acceptInsecureCerts for WebDriver classic compatibility

Author: whimboo

index.bs

@@ -2218,7 +2218,7 @@ filter only those that ought to be returned to the local end.
 
 <pre class="cddl remote-cddl local-cddl">
 CapabilitiesRequest = {
-  ?acceptInsecureCertificates: bool,
+  ?acceptInsecureCerts: bool,
   ?browserName: text,
   ?browserVersion: text,
   ?platformName: text,
@@ -2322,7 +2322,7 @@ This is a [=static command=].
       SessionNewResult = {
         sessionId: text,
         capabilities: {
-          acceptInsecureCertificates: bool,
+          acceptInsecureCerts: bool,
           browserName: text,
           browserVersion: text,
           platformName: text,