DEV: Fix typo in customize-robots-txt (#16599)

app/assets/javascripts/admin/addon/controllers/admin-customize-robots-txt.js

@@ -8,7 +8,7 @@ export default Controller.extend(bufferedProperty("model"), {
   saved: false,
   isSaving: false,
   saveDisabled: propertyEqual("model.robots_txt", "buffered.robots_txt"),
-  resetDisbaled: not("model.overridden"),
+  resetDisabled: not("model.overridden"),
 
   actions: {
     save() {

app/assets/javascripts/admin/addon/templates/customize-robots-txt.hbs

@@ -12,7 +12,7 @@
   {{#save-controls model=this action=(action "save") saved=saved saveDisabled=saveDisabled}}
     {{d-button
       class="btn-default"
-      disabled=resetDisbaled
+      disabled=resetDisabled
       icon="undo"
       action=(action "reset")
       label="admin.settings.reset"}}