Update README.md

Author: WEI-RONG CHEN

README.md

@@ -65,7 +65,7 @@ For example, if the above-mentioned files are put in a folder: ''./DeepEdge'', t
 <img src="./Screenshots/tab2_Anchor.png" width = 250>
 </p>
 <p align="center">
-<img src="./Screenshots/tab3_DeepEdgeb.png" width = 250>
+<img src="./Screenshots/tab3_DeepEdge.png" width = 250>
 <img src="./Screenshots/tab4_Diagnostic.png" width = 250>
 </p>