Update Python+Pulp建模.md

Author: jasonyoyo

Python+Pulp建模.md

@@ -18,7 +18,7 @@
 ## (三)數學模式
 
 <img src="https://github.com/jasonyoyo/python-pulp/blob/master/picture/%E6%95%B8%E5%AD%B8%E5%BC%8F.png" width="400">
-<img src="https://github.com/jasonyoyo/python-pulp/blob/master/picture/%E9%81%8E%E7%A8%8B.png" width="600">
+<img src="https://github.com/jasonyoyo/python-pulp/blob/master/picture/%E6%96%B0%E7%89%88.png" width="600">
 
 
 ## (四)Python+Pulp建模求解