wip: simplify and add favicon

scripts/update-specs.ts

@@ -1,8 +1,6 @@
 /**
  * Fetches spec documents and diagrams from the common-flow GitHub repo
  * and writes them to the appropriate locations for Astro to consume.
- *
- * Equivalent to the Jekyll Rakefile's `rake update` task.
  */
 
 import * as fs from "node:fs";