feat: show txt for text files. (#179)

Author: afzal442

src/components/CodeBlock.vue

@@ -43,13 +43,13 @@ export default {
  // computed properties
  const className = computed(() => {
  if (props.lang === 'txt') {
- return 'language-markup'
+ return 'language-text'
  }
  return `language-${lang.value}`
  })
  const highlightCode = computed(() => {
  if (lang.value === 'txt') {
- return highlight(code.value, languages['markup'], 'markup')
+ return highlight(code.value, {}, 'txt')
  }
  return highlight(code.value, languages[lang.value], lang.value)
  })
@@ -149,6 +149,11 @@ div[class~='language-markdown']::before {
  content: 'md';
 }
 
+div[class~='language-txt']::before,
+div[class~='language-text']::before {
+ content: 'txt';
+}
+
 div[class~='language-json']::before {
  content: 'json';
 }