chore: fix experimental blob video display in IPython 7.x (#1319)

Author: GarrettWu

bigframes/operations/blob.py

@@ -216,7 +216,7 @@ def display_single_url(read_url: str, content_type: str):
                 response = requests.get(read_url)
                 ipy_display.display(ipy_display.Audio(response.content))
             elif content_type.startswith("video"):
-                ipy_display.display(ipy_display.Video(url=read_url))
+                ipy_display.display(ipy_display.Video(read_url))
             else:  # display as raw data
                 response = requests.get(read_url)
                 ipy_display.display(response.content)