fix form

src/allmydata/web/directory.py

@@ -896,7 +896,8 @@ class DirectoryAsHTML(Element):
             id='mkdir-mdmf',
         )
 
-        mkdir_form = tags.form([
+        mkdir_form = tags.form(
+            [
                 tags.fieldset([
                     tags.input(type="hidden", name="t", value="mkdir"),
                     tags.input(type="hidden", name="when_done", value="."),
@@ -914,13 +915,13 @@ class DirectoryAsHTML(Element):
                         type="submit",
                         class_="btn",
                         value="Create",
-                )
+                    ),
+                ])
             ],
             action=".",
             method="post",
             enctype="multipart/form-data",
         )
-        ])
         forms.append(tags.div(mkdir_form, class_="freeform-form"))
 
         upload_chk = tags.input(