docs: replace neofetch with uname -a

neofetch is no longer maintained: https://github.com/dylanaraps/neofetch
Alternatives like fastfetch are not as famous as neofetch.

Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>

Author: AkihiroSuda

README.md

@@ -29,8 +29,7 @@ limactl start
 
 To run Linux commands:
 ```bash
-lima sudo apt-get install -y neofetch
-lima neofetch
+lima uname -a
 ```
 
 To run containers with containerd:

website/content/en/docs/examples/_index.md

@@ -5,8 +5,7 @@ weight: 3
 
 ## Running Linux commands
 ```bash
-lima sudo apt-get install -y neofetch
-lima neofetch
+lima uname -a
 ```
 
 ## Accessing host files