remove extra space

Author: abh1sar

source/adminguide/storage.rst

@@ -261,7 +261,7 @@ mode.
 
 .. note::
    Even user instances with VMHA enabled will be stopped when the primary storage is put into maintenance mode.
-   It is recommended to migrate any business-critical VMs  to alternate primary storage before initiating maintenance.
+   It is recommended to migrate any business-critical VMs to alternate primary storage before initiating maintenance.
 
 Browsing files on a primary storage
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~