Fix typo

README.md

@@ -43,7 +43,7 @@ pip install labelme
 conda create --name=labelme python=3.6
 source activate labelme
 # conda install pyqt
-pip install pyqt5  # pyut5 can be installed via pip on python3
+pip install pyqt5  # pyqt5 can be installed via pip on python3
 pip install labelme
 ```