Readme fixes (#2592)

Author: justinxzhao

README.md

@@ -3,7 +3,7 @@
 <div align="center">
 
 [![PyPI version](https://badge.fury.io/py/ludwig.svg)](https://badge.fury.io/py/ludwig)
-[![Build Status](https://github.com/ludwig-ai/ludwig/actions/workflows/pytest.yml/badge.svg)](https://github.com/ludwig-ai/ludwig/actions/workflows/pytest.yml)
+[![Commit Activity](https://img.shields.io/github/commit-activity/m/ludwig-ai/ludwig)](https://img.shields.io/github/commit-activity/m/ludwig-ai/ludwig)
 [![CII Best Practices](https://bestpractices.coreinfrastructure.org/projects/4210/badge)](https://bestpractices.coreinfrastructure.org/projects/4210)
 [![Slack](https://img.shields.io/badge/slack-chat-green.svg?logo=slack)](https://join.slack.com/t/ludwig-ai/shared_invite/zt-mrxo87w6-DlX5~73T2B4v_g6jj0pJcQ)
 
@@ -12,9 +12,9 @@
 [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://github.com/ludwig-ai/ludwig/blob/master/LICENSE)
 [![Twitter](https://img.shields.io/twitter/follow/ludwig_ai.svg?style=social&logo=twitter)](https://twitter.com/ludwig_ai)
 
-</div>
+[Full official documentation](https://ludwig.ai)
 
-[Full official documentation](ludwig.ai)
+</div>
 
 # What is Ludwig?
 
@@ -395,8 +395,6 @@ if you have any questions.
 
 # More Information
 
-[Full official documentation](ludwig.ai).
-
 Read our publications on [Ludwig](https://arxiv.org/pdf/1909.07930.pdf), [declarative ML](https://arxiv.org/pdf/2107.08148.pdf), and [Ludwig’s SoTA benchmarks](https://openreview.net/pdf?id=hwjnu6qW7E4).
 
 Learn more about [how Ludwig works](https://ludwig-ai.github.io/ludwig-docs/latest/user_guide/how_ludwig_works/), [how to get started](https://ludwig-ai.github.io/ludwig-docs/latest/getting_started/), and work through more [examples](https://ludwig-ai.github.io/ludwig-docs/latest/examples).