Fix codeblocks semantic

Author: MewenLeHo

src/assets/script.js

@@ -377,7 +377,7 @@ function highlightCodeBlocks() {
             const language = codeBlock.result.language
             const displayLanguage = displayLanguageList[language] || language
             const languageWrapper = document.createElement('div')
-            languageWrapper.classList.add('bg-primary', 'd-inline-block', 'p-2', 'font-weight-bold')
+            languageWrapper.classList.add('bg-primary', 'd-inline-block', 'p-2', 'mb-0', 'font-weight-bold')
             languageWrapper.textContent = displayLanguage
 
             codeBlock.parentNode.insertBefore(languageWrapper, codeBlock)