Update README.md

quad/README.md

@@ -33,9 +33,7 @@ cd src/<project> && make
 whether it is a library or executable, respectively)
 
 #### XSDK Project (embedded project that runs on the Zybo)
-To build the XSDK project, use the XSDK IDE. Refer to the [Xilinx How-to](doc/how_to_use_xilinx_tools.pdf)
-for more instructions. Be sure to select the `xsdk_workspace` directory in the
-quad directory as your "workspace."
+To build the XSDK project, refer to the [XSDK instructions](xsdk_workspace/README.md)
 
 ## Testing