docs(mysql): address review feedback on MariaDB documentation

Remove separate MariaDB entry from README backends list. Document MariaDB
under Connect on the mysql backend page. Label README entry and page title
MySQL/MariaDB; API and URL remain mysql.

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: 2 people

README.md

@@ -149,8 +149,7 @@ Ibis supports more than 20 backends:
 - [DuckDB](https://ibis-project.org/backends/duckdb/)
 - [Exasol](https://ibis-project.org/backends/exasol)
 - [Materialize](https://ibis-project.org/backends/materialize/)
-- [MySQL](https://ibis-project.org/backends/mysql/)
-- [MariaDB](https://ibis-project.org/backends/mysql/)
+- [MySQL/MariaDB](https://ibis-project.org/backends/mysql/)
 - [Oracle](https://ibis-project.org/backends/oracle/)
 - [Polars](https://ibis-project.org/backends/polars/)
 - [PostgreSQL](https://ibis-project.org/backends/postgresql/)

docs/backends/mysql.qmd

@@ -1,9 +1,7 @@
-# MySQL
+# MySQL/MariaDB
 
 [https://www.mysql.com](https://www.mysql.com)
 
-[MariaDB](http://www.mariadb.org) is supported via the same backend. Use `ibis.mysql.connect()` or a `mysql://` connection URL.
-
 ![](https://img.shields.io/badge/memtables-fallback-yellow?style=flat-square) ![](https://img.shields.io/badge/inputs-MySQL tables-blue?style=flat-square) ![](https://img.shields.io/badge/outputs-MySQL tables | CSV | pandas | Parquet | PyArrow-orange?style=flat-square)
 
 ## Install
@@ -105,6 +103,12 @@ passing a properly-formatted MySQL connection URL to `ibis.connect`:
 con = ibis.connect(f"mysql://{user}:{password}@{host}:{port}/{database}")
 ```
 
+### MariaDB
+
+The MySQL backend also works with [MariaDB](https://mariadb.org). Use the same
+`ibis.mysql.connect()` API or a `mysql://` connection URL. Ibis development and
+CI use a MariaDB image in `compose.yaml`.
+
 ```{python}
 #| echo: false
 BACKEND = "MySQL"