docs: front matter language example should use lang (#2939)

matharden · web-flow · commit b26be33b295a · 2021-12-19T03:16:12.000+08:00
diff --git a/packages/docs/docs/guide/frontmatter.md b/packages/docs/docs/guide/frontmatter.md
@@ -21,7 +21,7 @@ lang: en-US
 
 # {{ $frontmatter.title }}
 
-My blog post is written in {{ $frontmatter.language }}.
+My blog post is written in {{ $frontmatter.lang }}.
 ```
 
 ## Alternative frontmatter Formats
