fix python install command line

Your Name · Your Name · commit 4464903fcab7 · 2022-04-04T15:23:13.000+08:00
diff --git a/Makefile b/Makefile
@@ -1,5 +1,5 @@
 install:
-	python install -r requirements.txt
+	pip install -r requirements.txt
 setup:
 	python setup.py install
 lint:
