Rename action to "Rust source coverage"

Author: lpenz

README.md

@@ -1,4 +1,4 @@
-[![marketplace](https://img.shields.io/badge/marketplace-rust--coverage-blue?logo=github)](https://github.com/marketplace/actions/rust-coverage)
+[![marketplace](https://img.shields.io/badge/marketplace-rust--source--coverage-blue?logo=github)](https://github.com/marketplace/actions/rust-source-coverage)
 [![CI](https://github.com/lpenz/ghaction-rust-coverage/actions/workflows/ci.yml/badge.svg)](https://github.com/lpenz/ghaction-rust-coverage/actions/workflows/ci.yml)
 [![github](https://img.shields.io/github/v/release/lpenz/ghaction-rust-coverage?include_prereleases&label=release&logo=github)](https://github.com/lpenz/ghaction-rust-coverage/releases)
 [![docker](https://img.shields.io/docker/v/lpenz/ghaction-rust-coverage?label=release&logo=docker&sort=semver)](https://hub.docker.com/repository/docker/lpenz/ghaction-rust-coverage)

action.yml

@@ -1,6 +1,6 @@
 ---
-name: rust-source-coverage
-description: Docker github action to run source-based coverage on a rust project
+name: Rust source coverage
+description: Docker github action that runs cargo test while gathering source-based coverage data
 branding:
   icon: play-circle
   color: black