ENGCOM-2004: [Backport] Correct typo correction js files #16111

 - Merge Pull Request #16111 from hitesh-wagento/magento2:2.1-develop-PR-port-correct-typo-correction
 - Merged commits:
   1. 0e87e9e
   2. 9b9cc60
   3. 2f13af3
   4. 6f7c874
   5. fc130fd
   6. f6bc135
   7. 9f8a77a

Author: magento-engcom-team

app/code/Magento/Ui/view/base/web/js/form/element/file-uploader.js

@@ -127,7 +127,7 @@ define([
 
         /**
          * Retrieves from the list file which matches
-         * search criteria implemented in itertor function.
+         * search criteria implemented in iterator function.
          *
          * @param {Function} fn - Function that will be invoked
          *      for each file in the list.
@@ -185,7 +185,7 @@ define([
         },
 
         /**
-         * Returns path to the files' preview image.
+         * Returns path to the file's preview image.
          *
          * @param {Object} file
          * @returns {String}
@@ -284,7 +284,7 @@ define([
 
         /**
          * Abstract handler which is invoked when files are choosed for upload.
-         * May be used for implementation of aditional validation rules,
+         * May be used for implementation of additional validation rules,
          * e.g. total files and a total size rules.
          *
          * @abstract