transfer all nodes when converting literal block to CLI prompt

Author: Nabil Maynard

preview-src/index.adoc

@@ -276,7 +276,12 @@ Don't forget this step!
 ====
 If you installed the CLI and the default site generator globally, you can upgrade both of them with the same command.
 
- $ npm i -g @antora/cli @antora/site-generator-default
+ $ npm i -g @antora/cli @antora/site-generator
+
+Or you can install the metapackage to upgrade both packages at once.
+
+[subs=+quotes]
+ $ npm i -g *antora*
 ====
 
 Nominavi luptatum eos, an vim hinc philosophia intellegebat.

src/js/06-copy-to-clipboard.js

@@ -25,7 +25,7 @@
       pre.classList.add('highlightjs', 'highlight')
       ;(code = document.createElement('code')).className = 'language-console hljs'
       code.dataset.lang = 'console'
-      code.appendChild(pre.firstChild)
+      while (pre.hasChildNodes()) code.appendChild(pre.firstChild)
       pre.appendChild(code)
     } else {
       return