Improve BatchElements documentation #29198

Job	Run time
Build python source distribution	2m 30s
Check environment variables	19s
Build python wheels on for ubuntu-20.04	19m 24s
Prepare GCS	0s
Build python wheels on for ubuntu-20.04	16m 35s
Build python wheels on for ubuntu-20.04	17m 55s
Build python wheels on for ubuntu-20.04	17m 48s
Build python wheels on for ubuntu-20.04	18m 7s
Build python wheels on for macos-13	37s
Build python wheels on for macos-13	1m 11s
Build python wheels on for macos-13	1m 11s
Build python wheels on for macos-13	53s
Build python wheels on for macos-13	4m 2s
Build python wheels on for windows-latest	1m 7s
Build python wheels on for windows-latest	51s
Build python wheels on for windows-latest	50s
Build python wheels on for windows-latest	32s
Build python wheels on for windows-latest	5m 31s
Build python wheels on for ubuntu-20.04	1m 0s
Upload python source distribution to GCS bucket	0s
Build python wheels on for ubuntu-20.04	1m 15s
Build python wheels on for ubuntu-20.04	1m 17s
Build python wheels on for ubuntu-20.04	1m 28s
Build python wheels on for ubuntu-20.04	49m 14s
Upload wheels to GCS bucket	0s
Branch repo nightly	0s
List files on Google Cloud Storage Bucket	0s
	2h 43m 37s

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