Dependency Version Constraints error in release notes for version 1.15.0

[fabalbertoni]

URL(s) with the issue:

https://github.com/tensorflow/tfx/releases/tag/v1.15.0

Description of issue (what needs changing):

The Version Constraints for google-cloud-bigquery are wrong in the v1.15.0 release notes.

It states google-cloud-bigquery version constraint is >=2.26.0,<3 for v1.15.0 and was >=3,<4 previously in v1.14.0, but it's the other way around.

Proof:
Dependency for tfx 1.15.0 (google-cloud-bigquery>=3,<4)
Dependency for tfx 1.14.0 (google-cloud-bigquery>=2.26.0,<3)

[lego0901]

Oh, good catch! Will edit it shortly. Thanks!