Revert #1597 - Update to highlight.js 11.0.

CONTRIBUTING.md

@@ -121,7 +121,7 @@ Unfortunately at this time we don't have any automated UI or browser testing, so
 The following are instructions for updating [highlight.js](https://highlightjs.org/).
 
 1. Clone the repository at <https://github.com/highlightjs/highlight.js>
-1. Check out a tagged release (like `11.0.0`).
+1. Check out a tagged release (like `10.1.1`).
 1. Run `npm install`
 1. Run `node tools/build.js :common apache armasm coffeescript d handlebars haskell http julia nginx properties r scala x86asm yaml`
 1. Compare the language list that it spits out to the one in [`syntax-highlighting.md`](https://github.com/camelid/mdBook/blob/master/guide/src/format/theme/syntax-highlighting.md). If any are missing, add them to the list and rebuild (and update these docs). If any are added to the common set, add them to `syntax-highlighting.md`.

guide/src/format/theme/syntax-highlighting.md

@@ -47,11 +47,9 @@ your own `highlight.js` file:
 - objectivec
 - perl
 - php
-- php-template
 - plaintext
 - properties
 - python
-- python-repl
 - r
 - ruby
 - rust
@@ -61,7 +59,6 @@ your own `highlight.js` file:
 - sql
 - swift
 - typescript
-- vbnet
 - x86asm
 - xml
 - yaml

src/theme/book.js

@@ -169,9 +169,9 @@ function playground_text(playground) {
         Array
         code_nodes
             .filter(function (node) {return !node.classList.contains("editable"); })
-            .forEach(function (block) { hljs.highlightElement(block); });
+            .forEach(function (block) { hljs.highlightBlock(block); });
     } else {
-        code_nodes.forEach(function (block) { hljs.highlightElement(block); });
+        code_nodes.forEach(function (block) { hljs.highlightBlock(block); });
     }
 
     // Adding the hljs class gives code blocks the color css