contents: fix typo in subtitle of null vs undefined vs undeclared

yangshun · web-flow · commit 58458e8bfbc9 · 2025-01-15T13:19:47.000+08:00
diff --git a/questions/whats-the-difference-between-a-variable-that-is-null-undefined-or-undeclared-how-would-you-go-about-checking-for-any-of-these-states/en-US.mdx b/questions/whats-the-difference-between-a-variable-that-is-null-undefined-or-undeclared-how-would-you-go-about-checking-for-any-of-these-states/en-US.mdx
@@ -1,6 +1,6 @@
 ---
 title: "What's the difference between a JavaScript variable that is: `null`, `undefined` or undeclared?"
-subtitle: How would you go about checking for any of these states?"
+subtitle: How would you go about checking for any of these states?
 ---
 
 ## TL;DR
