#143 Fix wrong URL of test budge

Author: astropenguin

README.md

@@ -2,7 +2,7 @@
 
 [![PyPI](https://img.shields.io/pypi/v/xarray-dataclasses.svg?label=PyPI&style=flat-square)](https://pypi.org/project/xarray-dataclasses/)
 [![Python](https://img.shields.io/pypi/pyversions/xarray-dataclasses.svg?label=Python&color=yellow&style=flat-square)](https://pypi.org/project/xarray-dataclasses/)
-[![Test](https://img.shields.io/github/workflow/status/astropenguin/xarray-dataclasses/Test?logo=github&label=Test&style=flat-square)](https://github.com/astropenguin/xarray-dataclasses/actions)
+[![Test](https://img.shields.io/github/workflow/status/astropenguin/xarray-dataclasses/Tests?logo=github&label=Test&style=flat-square)](https://github.com/astropenguin/xarray-dataclasses/actions)
 [![License](https://img.shields.io/badge/license-MIT-blue.svg?label=License&style=flat-square)](LICENSE)
 [![DOI](https://img.shields.io/badge/DOI-10.5281/zenodo.4624819-blue?style=flat-square)](https://doi.org/10.5281/zenodo.4624819)
 
@@ -49,10 +49,9 @@ ones = Image.ones((2, 2), x=[0, 1], y=[0, 1])
 ### Installation
 
 ```shell
-$ pip install xarray-dataclasses
+pip install xarray-dataclasses
 ```
 
-
 ## Background
 
 [xarray] is useful for handling labeled multi-dimensional data, but it is a bit troublesome to create DataArray and Dataset objects with fixed dimensions, data type, or coordinates (typed DataArray and typed Dataset).