update README

README.md

@@ -2,31 +2,29 @@
 
 # mise-spark [![Build](https://github.com/benberryallwood/mise-spark/actions/workflows/build.yml/badge.svg)](https://github.com/benberryallwood/mise-spark/actions/workflows/build.yml) [![Lint](https://github.com/benberryallwood/mise-spark/actions/workflows/lint.yml/badge.svg)](https://github.com/benberryallwood/mise-spark/actions/workflows/lint.yml)
 
-[spark](https://spark.apache.org/documentation.html) plugin for the [asdf version manager](https://asdf-vm.com).
+[Apache Spark](https://spark.apache.org/documentation.html) plugin for the [asdf version manager](https://asdf-vm.com).
 
 </div>
 
-# Contents
+## Contents
 
 - [Dependencies](#dependencies)
 - [Install](#install)
 - [Contributing](#contributing)
 - [License](#license)
 
-# Dependencies
+## Dependencies
 
 **TODO: adapt this section**
 
 - `bash`, `curl`, `tar`, and [POSIX utilities](https://pubs.opengroup.org/onlinepubs/9699919799/idx/utilities.html).
 - `SOME_ENV_VAR`: set this environment variable in your shell config to load the correct version of tool x.
 
-# Install
+## Install
 
 Plugin:
 
 ```shell
-asdf plugin add spark
-# or
 asdf plugin add spark https://github.com/benberryallwood/mise-spark.git
 ```
 
@@ -49,12 +47,12 @@ spark --help
 Check [asdf](https://github.com/asdf-vm/asdf) readme for more instructions on how to
 install & manage versions.
 
-# Contributing
+## Contributing
 
 Contributions of any kind welcome! See the [contributing guide](contributing.md).
 
 [Thanks goes to these contributors](https://github.com/benberryallwood/mise-spark/graphs/contributors)!
 
-# License
+## License
 
 See [LICENSE](LICENSE) © [Ben Berry-Allwood](https://github.com/benberryallwood/)