Update book.json

book.json

@@ -1,5 +1,11 @@
 {
+    "plugins": [ "github" ],
+    "pluginsConfig": {
+        "github": {
+            "url": "https://github.com/your/repo"
+        }
+    }
     "structure": {
         "readme": "01-Preface.md"
     }
-}
+}