fix: include a in sup-decoration

[solaris007]

Please always provide the GitHub issue(s) your PR is for, as well as test URLs where your change can be observed (before and after):

Fix #

Test URLs:

• Before: https://main--mammotome--hlxsites.aem.page/us/en/
• After: https://fix-sup-decoration--mammotome--hlxsites.aem.page/us/en/

[aem-code-sync[bot]]

Hello, I'm the AEM Code Sync Bot and I will run some actions to deploy your branch and validate page speed. In case there are problems, just click a checkbox below to rerun the respective action.

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Commits

* [8cf7886](https://github.com/hlxsites/mammotome/commit/8cf78866d7cca904a82de3ac5e3b3d0825c720ea) :white_check_mark: (latest) * [a549631](https://github.com/hlxsites/mammotome/commit/a549631464c3271a9acfdd148643eb3cd99b81ce) :white_check_mark:

[aem-code-sync[bot]]

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