chore: comment typo [skip ci] (#12359)

src/shared/util.js

@@ -35,7 +35,7 @@ export function isPrimitive (value: any): boolean %checks {
 
 /**
  * Quick object check - this is primarily used to tell
- * Objects from primitive values when we know the value
+ * objects from primitive values when we know the value
  * is a JSON-compliant type.
  */
 export function isObject (obj: mixed): boolean %checks {