Fix: Ensure respec2html doesn't cache old respec (#903)

* Ensure respec2html doesn't cache old respec versions in long-running processes

This has caused puzzling errors in the spec generator

* Use double quotes for jshint

tools/respecDocWriter.js

@@ -83,6 +83,7 @@ const tasks = {
         webPreferences: {
           "images": false,
           "defaultEncoding": "utf-8",
+          partition: "nopersist",
           userData,
         }
       });