fix: use solid instead of solid@latest in SolidStart getting started

Author: ogolknev

src/routes/solid-start/getting-started.mdx

@@ -24,7 +24,7 @@ This starter contains a collection of templates that can be used to quickly boot
 To start a new project you can initialize SolidStart with the following command:
 
 ```package-create
-solid@latest
+solid
 ```
 
 This will create a new directory for your project based on the name you enter.