removed => removing

1-js/04-object-basics/01-object/article.md

@@ -719,7 +719,7 @@ Additional operators:
 - To check if a property with the given key exists: `"key" in obj`.
 - To iterate over an object: `for(let key in obj)` loop.
 
-Objects are assigned and copied by reference. In other words, a variable stores not the "object value", but a "reference" (address in memory) for the value. So copying such a variable or passing it as a function argument copies that reference, not the object. All operations via copied references (like adding/removed properties) are performed on the same single object.
+Objects are assigned and copied by reference. In other words, a variable stores not the "object value", but a "reference" (address in memory) for the value. So copying such a variable or passing it as a function argument copies that reference, not the object. All operations via copied references (like adding/removing properties) are performed on the same single object.
 
 To make a "real copy" (a clone) we can use `Object.assign` or  [_.cloneDeep(obj)](https://lodash.com/docs#cloneDeep).