style: fix spacing in en-US.json

src/localization/locales/en-US.json

@@ -1028,7 +1028,7 @@
         "form_location_add_data_layer_dialog_source_file": "Source file: {{filename}}",
         "form_location_add_data_layer_dialog_restricted": "This map has restricted access. Adding it to a story map will make it public. Consulting with $t(user.full_name) is recommended.",
         "form_location_add_data_layer_dialog_cancel": "Cancel",
-        "form_location_add_data_layer_dialog_processing":"Processing",
+        "form_location_add_data_layer_dialog_processing": "Processing",
         "form_location_add_data_layer_confirm": "Add Map Layer",
         "share_dialog_title": "Invite Editors",
         "share_dialog_description": "Invite people to edit your story map. <1>Learn more about collaborating on story maps</1>.",