npm: align arguments (#19109)

Author: Managor

pages/common/npm.md

@@ -22,7 +22,7 @@
 
 - Download the latest version of a package and install it globally:
 
-`npm {{[i|install]}} {{[-g|--global]}} {{package_name}}`
+`npm {{[i|install]}} {{package_name}} {{[-g|--global]}}`
 
 - Uninstall a package and remove it from the list of dependencies in `package.json`: