Fix an error in a comment.

BUG=chromium:800120
TEST=comment only change.

Change-Id: Ie3a5d99186419c6a11d3efac4e7b50ec459cf772
Reviewed-on: https://chromium-review.googlesource.com/999118Reviewed-by: Steven Bennetts <stevenjb@chromium.org>
Commit-Queue: Tim Zheng <timzheng@chromium.org>
Cr-Commit-Position: refs/heads/master@{#548642}

chromeos/dbus/services/chrome_features_service_provider.h

@@ -27,7 +27,7 @@ namespace chromeos {
 // % dbus-send --system --type=method_call --print-reply
 //     --dest=org.chromium.ChromeFeaturesService
 //     /org/chromium/ChromeFeaturesService
-//     org.chromium.ChromeFeaturesService.IsCrostiniEnabled
+//     org.chromium.ChromeFeaturesServiceInterface.IsCrostiniEnabled
 //
 // % (returns true if Crostini is enabled, otherwise returns false)
 class CHROMEOS_EXPORT ChromeFeaturesServiceProvider