🔧 chore(issue-tmpl): fix typo (#68)

Fixed typo from `Langauge` to `Language` in language_request.yml.

Reported in: localizethedocs/clang-docs-l10n#23 (comment)

Author: hwhsu1231

.github/ISSUE_TEMPLATE/language_request.yml

@@ -1,6 +1,6 @@
 name: Request a New Language
 description: Use this template for requesting a new language.
-title: "[Langauge] Request New Language `<locale-code>`"
+title: "[Language] Request New Language `<locale-code>`"
 labels: [ "new language" ]
 body:
   - type: textarea