[benqprojector] Update broken link in README (#11383)

* Update broken link in README

Signed-off-by: Michael Lobstein <michael.lobstein@gmail.com>

diff --git a/bundles/org.openhab.binding.benqprojector/README.md b/bundles/org.openhab.binding.benqprojector/README.md
index 9bae5644e6eee698c2b746b082b07e56f8412017..815b88fbf83321e45dc007789f650f65497c59f3 100644 (file)
--- a/bundles/org.openhab.binding.benqprojector/README.md
+++ b/bundles/org.openhab.binding.benqprojector/README.md
@@ -3,7 +3,7 @@
 This binding is compatible with BenQ projectors that support the control protocol via the built-in ethernet port, serial port or USB to serial adapter.
 If your projector does not have built-in networking, you can connect to your projector's serial port via a TCP connection using a serial over IP device or by using`ser2net`.  
 
-The control protocol can be found here: https://business-display.benq.com/content/dam/bb/en/product/projector/corporate/lx770/quick-start-guide/lx770-rs232-control-guide-0-windows7-windows8-winxp.pdf
+The manufacturer's guide for connecting to the projector and the control protocol can be found in this document: [LX9215_RS232 Control Guide_0_Windows7_Windows8_WinXP.pdf](https://esupportdownload.benq.com/esupport/Projector/Control%20Protocols/LX9215/LX9215_RS232%20Control%20Guide_0_Windows7_Windows8_WinXP.pdf)
 
 ## Supported Things