fix: update repository URL from markdown-agent to mdflow

Author: johnlindquist

package.json

@@ -5,7 +5,7 @@
   "type": "module",
   "repository": {
     "type": "git",
-    "url": "https://github.com/johnlindquist/markdown-agent.git"
+    "url": "https://github.com/johnlindquist/mdflow.git"
   },
   "bin": {
     "mdflow": "./src/index.ts",