Update README.md

In line 178, templates folder seems to be inside of static folder and this condition gives notfoundtemplate error. I suggest delete one tab, I discovered this solution because I sew your solutions folder on github where locations is correct

3-Web-App/1-Web-App/README.md

@@ -165,7 +165,7 @@ Now you can build a Flask app to call your model and return similar results, but
     web-app/
       static/
         css/
-        templates/
+      templates/
     notebook.ipynb
     ufo-model.pkl
     ```