[Buildbot] Add hyperlink for Windows ocloc (#5336)

Author: yanfeng3721

buildbot/dependency.conf

@@ -25,6 +25,7 @@ ocl_fpga_emu_ver=2021.13.11.0.23
 ocl_fpga_emu_ver_win=2021.13.11.0.23
 fpga_ver=20211014_000004
 fpga_ver_win=20211014_000004
+# https://downloadmirror.intel.com/691496/igfx_win_101.1191.zip
 ocloc_ver_win=101.1191
 
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