Documentation/driver-api: xillybus: drop doubled word

Drop the doubled word "the".
Signed-off-by: NRandy Dunlap <rdunlap@infradead.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Acked-by: NEli Billauer <eli.billauer@gmail.com>
Link: https://lore.kernel.org/r/20200704034502.17199-18-rdunlap@infradead.orgSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Documentation/driver-api/xillybus.rst

@@ -273,7 +273,7 @@ buffer is full, the FPGA informs the host about that (appending a
 XILLYMSG_OPCODE_RELEASEBUF message channel 0 and sending an interrupt if
 necessary). The host responds by making the data available for reading through
 the character device. When all data has been read, the host writes on the
-the FPGA's buffer control register, allowing the buffer's overwriting. Flow
+FPGA's buffer control register, allowing the buffer's overwriting. Flow
 control mechanisms exist on both sides to prevent underflows and overflows.
 
 This is not good enough for creating a TCP/IP-like stream: If the data flow