docs: tidy up experimental pages

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

Author: AkihiroSuda

website/content/en/docs/config/plugin/cli.md

@@ -1,8 +1,11 @@
 ---
-title: CLI plugins (Experimental)
+title: CLI plugins
 weight: 2
 ---
 
+> **Warning**
+> Support for CLI plugins is experimental
+
  | ⚡ Requirement | Lima >= 2.0 |
  |----------------|-------------|
 

website/content/en/docs/config/vmtype/krunkit.md

@@ -3,7 +3,7 @@ title: Krunkit
 weight: 4
 ---
 
-> Warning
+> **Warning**
 > "krunkit" is experimental
 
 | ⚡ Requirement | Lima >= 2.0, macOS >= 14 (Sonoma+), Apple Silicon (arm64) |

website/content/en/docs/releases/experimental.md

@@ -13,6 +13,7 @@ The following features are experimental and subject to change:
 - `audio.device`
 - `mountInotify: true`
 - `External drivers`: building and using drivers as separate executables (see [Virtual Machine Drivers](../dev/drivers))
+- [`vmType: krunkit`](../config/vmtype/krunkit.md)
 
 The following commands are experimental and subject to change: