ENGCOM-4766: Correct spelling #22357

Author: sivaschenko

app/design/adminhtml/Magento/backend/web/css/source/forms/_fields.less

@@ -81,7 +81,7 @@
     min-width: 0;
     padding: 0;
 
-    //  Filedset section
+    //  Fieldset section
     .fieldset-wrapper {
         &.admin__fieldset-section {
             > .fieldset-wrapper-title {