Add tip about older "npx create-strapi-app@latest" installation command (#2795)

* Add tip about older installation command

* Remove useless br after new tip

Author: meganelacheny

docusaurus/docs/cms/installation/cli.md

@@ -45,8 +45,10 @@ Follow the steps below to create a new Strapi project, being sure to use the app
     * `npx` runs a command from a npm package
     * `create-strapi` is the Strapi package
     * `@latest` indicates that the latest version of Strapi is used
-    
-    <br/>
+
+    :::tip
+    The older `npx create-strapi-app@latest` command still works and will provide the exact same experience as the newer `npx create-strapi@latest` command.
+    :::
 
     Instead of npx, the traditional npm command can be used too, with `npm create strapi@latest`.