Add categories to readme-vars.yml

readme-vars.yml

@@ -7,6 +7,7 @@ project_logo: "https://raw.githubusercontent.com/linuxserver/docker-templates/ma
 project_blurb: |
   [{{ project_name|capitalize }}]({{ project_url }}) is a free software tool written in PHP, intended to handle the administration of MySQL over the Web. phpMyAdmin supports a wide range of operations on MySQL and MariaDB.
 project_lsio_github_repo_url: "https://github.com/linuxserver/docker-{{ project_name }}"
+project_categories: "Databases"
 # supported architectures
 available_architectures:
   - {arch: "{{ arch_x86_64 }}", tag: "amd64-latest"}