Documentation: filesystems: configfs: drop doubled word

Drop the doubled word "be".
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20200703214325.31036-4-rdunlap@infradead.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/filesystems/configfs.rst

@@ -226,7 +226,7 @@ filename.  configfs_attribute->ca_mode specifies the file permissions.
 If an attribute is readable and provides a ->show method, that method will
 be called whenever userspace asks for a read(2) on the attribute.  If an
 attribute is writable and provides a ->store  method, that method will be
-be called whenever userspace asks for a write(2) on the attribute.
+called whenever userspace asks for a write(2) on the attribute.
 
 struct configfs_bin_attribute
 =============================