Fixed code styles and preview images.

config.toml

@@ -3,7 +3,7 @@ title = "s3rius blog"
 base_url = "https://s3rius.blog"
 theme = "hermit_zola"
 compile_sass = true
-minify_html = true
+minify_html = false
 
 build_search_index = true
 generate_sitemap = true
@@ -16,6 +16,7 @@ render_emojis = true
 smart_punctuation = true
 
 [extra]
+preview_image = "preview.png"
 home_subtitle = "Notes on writing unmaintainable software"
 
 footer_copyright = ' &#183; <a href="https://creativecommons.org/licenses/by-nc/4.0/" target="_blank" rel="noopener">CC BY-NC 4.0</a>'
@@ -32,11 +33,6 @@ hermit_social = [
 ]
 
 
-[extra.highlightjs]
-enable = true
-clipboard = true
-theme = "https://unpkg.com/nord-highlightjs@0.1.0/dist/nord.css"
-
 [extra.author]
 name = "Pavel Kirilin"
 email = "s3rius@le-memese.com"