chore: fix rocks terminology (#41)

README.md

@@ -1,12 +1,12 @@
-# MySQL Server ROCK
+# MySQL Server rock
 [![Release to GHCR](https://github.com/canonical/charmed-mysql-rock/actions/workflows/release.yaml/badge.svg)](https://github.com/canonical/charmed-mysql-rock/actions/workflows/release.yaml)
 
-This repository contains the packaging metadata for creating a ROCK of MySQL built from the official ubuntu MySQL package from the Ubuntu repository and further installs mysql-shell.  For more information on ROCKs, visit the [rockcraft Github](https://github.com/canonical/rockcraft). 
+This repository contains the packaging metadata for creating a rock of MySQL built from the official ubuntu MySQL package from the Ubuntu repository and further installs mysql-shell.  For more information on rocks, visit the [rockcraft Github](https://github.com/canonical/rockcraft). 
 
 Built for use in the [MySQL k8s charm](https://github.com/canonical/mysql-k8s-operator).
 
-## Building the ROCK
-The steps outlined below are based on the assumption that you are building the ROCK with the latest LTS of Ubuntu.  If you are using another version of Ubuntu or another operating system, the process may be different.
+## Building the rock
+The steps outlined below are based on the assumption that you are building the rock with the latest LTS of Ubuntu.  If you are using another version of Ubuntu or another operating system, the process may be different.
 
 ### Clone Repository
 ```bash
@@ -26,14 +26,14 @@ sudo usermod -aG docker $USER
 sudo lxd init --auto
 ```
 *_NOTE:_* You will need to open a new shell for the group change to take effect (i.e. `su - $USER`)
-### Packing and Running the ROCK
+### Packing and Running the rock
 ```bash
 rockcraft pack
 sudo skopeo --insecure-policy copy oci-archive:mysql*.rock docker-daemon:<username>/mysql-server:<tag>
 docker run --rm -it <username>/mysql-server:<tag>
 ```
 
 ## License
-The MySQL Server ROCK is free software, distributed under the Apache
+The MySQL Server rock is free software, distributed under the Apache
 Software License, version 2.0. See
 [LICENSE](https://github.com/canonical/charmed-mysql-container/blob/8.0-22.04/licenses)

rockcraft.yaml

@@ -1,11 +1,11 @@
 name: charmed-mysql
 base: ubuntu@22.04
 version: '8.0.39'
-summary: Charmed MySQL ROCK OCI
+summary: Charmed MySQL rock OCI
 description: |
     MySQL built from the official MySQL package
     from the MySQL repository and installs
-    mysql-shell.  For more information on ROCKs, visit
+    mysql-shell.  For more information on rocks, visit
     the https://github.com/canonical/rockcraft.
 license: Apache-2.0
 platforms: