removing webpack-command

In response to webpack#2447

Author: Legends

src/content/guides/installation.md

@@ -28,18 +28,12 @@ npm install --save-dev webpack
 npm install --save-dev webpack@<version>
 ```
 
-If you're using webpack v4 or later, you'll need to install a [CLI](/api/cli/).
+If you're using webpack v4 or later, you'll need to install the [CLI](/api/cli/).
 
 ``` bash
 npm install --save-dev webpack-cli
 ```
 
-or
-
-``` bash
-npm install --save-dev webpack-command
-```
-
 
 Installing locally is what we recommend for most projects. This makes it easier to upgrade projects individually when breaking changes are introduced. Typically webpack is run via one or more [npm scripts](https://docs.npmjs.com/misc/scripts) which will look for a webpack installation in your local `node_modules` directory: