camelize comment typo (#3696) (#3698)

src/util/lang.js

@@ -167,7 +167,7 @@ export function stripQuotes (str) {
 }
 
 /**
- * Camelize a hyphen-delmited string.
+ * Camelize a hyphen-delimited string.
  *
  * @param {String} str
  * @return {String}