[skip ci] fix Makefile command description

Author: ytdHuang

Makefile

@@ -30,7 +30,7 @@ help:
 	@echo " - make changelog: generate changelog"
 	@echo " - make test: run the tests"
 	@echo " - make docs: instantiate and build the documentation"
-	@echo " - make vitepress: (for Windows OS only) start Vitepress site of documentation"
+	@echo " - make vitepress: start Vitepress site of documentation"
 	@echo " - make all: run every commands in the above order"
 
 .PHONY: default setup format changelog test docs vitepress all help