Index: src/js/_enqueues/wp/customize/controls.js
===================================================================
--- src/js/_enqueues/wp/customize/controls.js	(revision 57261)
+++ src/js/_enqueues/wp/customize/controls.js	(working copy)
@@ -3866,7 +3866,7 @@
 			var control = this, container, notifications, hasError = false;
 
 			if ( 'undefined' !== typeof console && console.warn ) {
-				console.warn( '[DEPRECATED] wp.customize.Control.prototype.renderNotifications() is deprecated in favor of instantating a wp.customize.Notifications and calling its render() method.' );
+				console.warn( '[DEPRECATED] wp.customize.Control.prototype.renderNotifications() is deprecated in favor of instantiating a wp.customize.Notifications and calling its render() method.' );
 			}
 
 			container = control.getNotificationsContainerElement();
Index: src/wp-admin/includes/deprecated.php
===================================================================
--- src/wp-admin/includes/deprecated.php	(revision 57261)
+++ src/wp-admin/includes/deprecated.php	(working copy)
@@ -1152,7 +1152,7 @@
 /**
  * This was once used to kick-off the Core Updater.
  *
- * Deprecated in favor of instantating a Core_Upgrader instance directly,
+ * Deprecated in favor of instantiating a Core_Upgrader instance directly,
  * and calling the 'upgrade' method.
  *
  * @since 2.7.0
@@ -1174,7 +1174,7 @@
 /**
  * This was once used to kick-off the Plugin Updater.
  *
- * Deprecated in favor of instantating a Plugin_Upgrader instance directly,
+ * Deprecated in favor of instantiating a Plugin_Upgrader instance directly,
  * and calling the 'upgrade' method.
  * Unused since 2.8.0.
  *