Update description in package.json for Fast

Author: dsvorc41

frameworks/keyed/fast/package.json

@@ -2,7 +2,7 @@
   "name": "js-framework-benchmark-fast",
   "version": "1.0.0",
   "type": "module",
-  "description": "Fast demo",
+  "description": "Fast Framework Benchmark",
   "main": "index.js",
   "js-framework-benchmark": {
     "frameworkVersionFromPackage": "@microsoft/fast-element",