Update README.md

Author: Agony5757

README.md

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 |Branch| CI Status | Github Action |
 |:----:|:----:|:----:|
 |master|[![Build Status](https://app.travis-ci.com/Agony5757/mahjong.svg?branch=master)](https://app.travis-ci.com/Agony5757/mahjong)|[![Build-and-test](https://github.com/Agony5757/mahjong/actions/workflows/build-and-test.yml/badge.svg?branch=master)](https://github.com/Agony5757/mahjong/actions/workflows/build-and-test.yml)|
-|develop|[![Build Status](https://app.travis-ci.com/Agony5757/mahjong.svg?branch=develop)](https://app.travis-ci.com/Agony5757/mahjong)|[![Build-and-test](https://github.com/Agony5757/mahjong/actions/workflows/build-and-test.yml/badge.svg?branch=master)](https://github.com/Agony5757/mahjong/actions/workflows/build-and-test.yml)|
+|develop|[![Build Status](https://app.travis-ci.com/Agony5757/mahjong.svg?branch=develop)](https://app.travis-ci.com/Agony5757/mahjong)|[![Build-and-test](https://github.com/Agony5757/mahjong/actions/workflows/build-and-test.yml/badge.svg?branch=develop)](https://github.com/Agony5757/mahjong/actions/workflows/build-and-test.yml)|
 
 Simulator of Japanese Riichi Mahjong (https://en.wikipedia.org/wiki/Japanese_Mahjong) written in C++.