fix(vue) Corrected typo in Vue plugin setting detectedLanguage (#2807)

* Corrected typo in Vue plugin setting detectedLanguage

Fixed typo `this.detectectLanguage` -> `this.detectedLanguage` when rendering content when a language has been provided. In that case detectedLanguage was not getting set, which meant the computed className was also not getting the language.

AUTHORS.txt

@@ -296,3 +296,4 @@ Contributors:
 - Fredrik Ekre <ekrefredrik@gmail.com>
 - Jan Pilzer <Hirse@github>
 - Jonathan Sharpe <mail@jonrshar.pe>
+- Michael Rush <michaelrush@gmail.com>

CHANGES.md

@@ -1,6 +1,10 @@
 ## Version 10.4.0 (work in process)
 
-New languages:
+Parser:
+
+- fix(vue): Language name now appears in CSS class (#2807) [Michael Rush][]
+
+New Languages:
 
 - Added Chapel grammar to SUPPORTED_LANGUAGES (#2806) [Brad Chamberlain][]
 
@@ -29,6 +33,7 @@ New themes:
 [Taufik Nurrohman]: https://github.com/taufik-nurrohman
 [Jan Pilzer]: https://github.com/Hirse
 [Jonathan Sharpe]: https://github.com/textbook
+[Michael Rush]: https://github.com/rushimusmaximus
 
 
 ## Version 10.3.1

src/plugins/vue.js

@@ -33,7 +33,7 @@ export const Component = {
         this.detectedLanguage = result.language;
       } else {
         result = hljs.highlight(this.language, this.code, this.ignoreIllegals);
-        this.detectectLanguage = this.language;
+        this.detectedLanguage = this.language;
       }
       return result.value;
     },