fixup! Add DOMException cause

Author: legendecas

index.bs

@@ -128,6 +128,7 @@ urlPrefix: https://tc39.es/ecma262/; spec: ECMA-262
         text: GetMethod; url: sec-getmethod
         text: GetValueFromBuffer; url: sec-getvaluefrombuffer
         text: IfAbruptRejectPromise; url: sec-ifabruptrejectpromise
+        text: InstallErrorCause; url: sec-installerrorcause
         text: IsArray; url: sec-isarray
         text: IsAccessorDescriptor; url: sec-isaccessordescriptor
         text: IsCallable; url: sec-iscallable