Revert "Update edge function runtime in vercel.json"

This reverts commit 62dc0e76f1.

vercel.json

@@ -1,24 +1,24 @@
 {
-	"functions": {
-		"api/[...path].js": {
-			"runtime": "@vercel/edge"
-		}
-	},
-	"headers": [
-		{
-			"headers": [
-				{
-					"key": "X-Powered-By",
-					"value": "Xget on Vercel"
-				}
-			],
-			"source": "/(.*)"
-		}
-	],
-	"rewrites": [
-		{
-			"destination": "/api/$1",
-			"source": "/(.*)"
-		}
-	]
-}
+  "functions": {
+    "api/[...path].js": {
+      "runtime": "edge"
+    }
+  },
+  "headers": [
+    {
+      "headers": [
+        {
+          "key": "X-Powered-By",
+          "value": "Xget on Vercel"
+        }
+      ],
+      "source": "/(.*)"
+    }
+  ],
+  "rewrites": [
+    {
+      "destination": "/api/$1",
+      "source": "/(.*)"
+    }
+  ]
+}