echo-dundun

Results 3 issues of echo-dundun

[doc](fix)delete the description of array_agg on 2.0

2 comment

The array_agg function is only available in 2.1

[fix](docs) fix the bug in copying the folder

update the config of max_batch_rows and max_batch_size

# Versions - [x] dev - [x] 3.0 - [x] 2.1 - [x] 2.0 # Languages - [x] Chinese - [x] English Based on this pr： https://github.com/apache/doris/pull/36632

version-2.1
version-dev
version-2.0
Reviewed
version-3.0