Update highlight.js / hidden line rust. (#1566)

fix #1565 

## Why?
mdBook during the parsing, put's all the hidden lines (beggining with
`#`) inside the `span` tag with `className="boring"`.
mdBook generated css files sets all the files with `boring` className to
be `display: none`. Unfortunately, new version of `highlight.js` wipes
all those mdBook spans during the highlighting process.

This version of `highlight.js` is based directly upon the mdBook
`highlight.js`, so hidden lines work as intended inside rust codes
examples.

extensions/scarb-doc/src/docs_generation/markdown/book_toml.rs

@@ -4,7 +4,7 @@ use crate::AdditionalMetadata;
 
 pub fn generate_book_toml_content(package_metadata: &AdditionalMetadata) -> String {
     formatdoc! {
-        r#"
+        r##"
             [book]
             authors = {:?}
             language = "en"
@@ -21,7 +21,10 @@ pub fn generate_book_toml_content(package_metadata: &AdditionalMetadata) -> Stri
             [output.html.fold]
             enable = true
             level = 0
-        "#,
+
+            [output.html.code.hidelines]
+            cairo = "#"
+        "##,
         package_metadata.authors.clone().unwrap_or_else(|| vec!["<unknown>".to_string()]),
         package_metadata.name
     }

extensions/scarb-doc/tests/data/hello_world_no_features/book.toml

@@ -14,3 +14,6 @@ runnable = false
 [output.html.fold]
 enable = true
 level = 0
+
+[output.html.code.hidelines]
+cairo = "#"

extensions/scarb-doc/tests/data/hello_world_sub_package_no_features/book.toml

@@ -14,3 +14,6 @@ runnable = false
 [output.html.fold]
 enable = true
 level = 0
+
+[output.html.code.hidelines]
+cairo = "#"

extensions/scarb-doc/tests/data/hello_world_sub_package_with_features/book.toml

@@ -14,3 +14,6 @@ runnable = false
 [output.html.fold]
 enable = true
 level = 0
+
+[output.html.code.hidelines]
+cairo = "#"

extensions/scarb-doc/tests/data/hello_world_sub_package_without_features/book.toml

@@ -14,3 +14,6 @@ runnable = false
 [output.html.fold]
 enable = true
 level = 0
+
+[output.html.code.hidelines]
+cairo = "#"

extensions/scarb-doc/tests/data/hello_world_with_features/book.toml

@@ -14,3 +14,6 @@ runnable = false
 [output.html.fold]
 enable = true
 level = 0
+
+[output.html.code.hidelines]
+cairo = "#"

extensions/scarb-doc/tests/data/hello_world_without_features/book.toml

@@ -14,3 +14,6 @@ runnable = false
 [output.html.fold]
 enable = true
 level = 0
+
+[output.html.code.hidelines]
+cairo = "#"

extensions/scarb-doc/theme/CONTRIBUTING.md

@@ -1,10 +1,3 @@
 # Contributing
 
-If you want to modify the way that the highlighting of Cairo code sample works, you need to:
-
-1. Clone the repository at https://github.com/highlightjs/highlight.js
-2. Copy our [cairo.js](./cairo.js) into `highlight.js/src/languages` directory
-3. Run `npm install`
-4. Modify the copied `cairo.js`
-5. Run `node tools/build.js :common apache armasm coffeescript d handlebars haskell http julia nginx nim nix properties r scala x86asm yaml cairo`
-6. Replace our [highlight.js](./highlight.js) content with newly built `highlight.js/build/highlight.min.js`
+If you want to modify the way that the highlighting of Cairo code sample works, you just need to change the `cairo` language definition inside the `highlight.js`.