Add bonsai.video xrefmap to docfx.json for prerequisite

Author: banchan86

docfx.json

@@ -105,6 +105,7 @@
     "xref": [
       "https://bonsai-rx.org/docs/xrefmap.yml",
       "https://bonsai-rx.org/gui/xrefmap.yml",
+      "https://bonsai-rx.org/video/xrefmap.yml",
       "https://horizongir.github.io/opencv.net/xrefmap.yml",
       "https://horizongir.github.io/ZedGraph/xrefmap.yml",
       "https://horizongir.github.io/opentk/xrefmap.yml",