Update introduction-to-cypress.mdx

Change "subject" to "object" in context of .its() command.

Author: Ali-Tadayoni

docs/app/core-concepts/introduction-to-cypress.mdx

@@ -1106,7 +1106,7 @@ that may cause it to fail without needing an explicit assertion you've added.
 - [`.click()`](/api/commands/click) expects the element to eventually be in an
   _actionable_ state.
 - [`.its()`](/api/commands/its) expects to eventually find a property on the
-  current subject.
+  current object.
 
 Certain commands may have a specific requirement that causes them to immediately
 fail without retrying, such as [`cy.request()`](/api/commands/request).