Minor corrections in Makefile

Makefile

@@ -12,7 +12,7 @@ help:
 	@echo "make linear_regression"
 	@echo "       runs the simple linear regression example"
 	@echo "make vgg16"
-	@ecgo "       runs the object detection example"
+	@echo "       runs the object detection example"
 	@echo "make env"
 	@echo "       creates and prepares the environment"
 	@echo "make data"
@@ -37,7 +37,7 @@ $(VENV_NAME)/bin/activate:
 	${PYTHON} -m pip install keras_vggface
 	${PYTHON} -m pip install pylint
 	${PYTHON} -m pip install mypy
-	${PYTHON} -m pip install panadas
+	${PYTHON} -m pip install pandas
 	${PYTHON} -m pip install sklearn
 	touch $(VENV_NAME)/bin/activate
 
@@ -47,7 +47,7 @@ linear_regression: env
 vgg16_training: fine_tune.h5
 fine_tune.h5:
 	${PYTHON} vgg16-prepare_train_model.py
-vgg16: env vgg16_training
+vgg16: env data vgg16_training
 	${PYTHON} vgg16-test_model.py
 
 lint: env
@@ -59,5 +59,7 @@ clean:
 	rm -rf images
 	rm -f images.tar.gz
 	rm -f fine_tune.h5
+	rm -rf yolov3.h5
+	rm -rf lenet5.h5
 	rm -rf .mypy_cache
 	rm -rf *.gz