blockquote alert render hook removes ending p letter in alerttitle

[McShelby]

What version of Hugo are you using (hugo version)?

$ hugo version
hugo v0.139.3-2f6864387cd31b975914e8373d4bf38bddbd47bc windows/amd64 BuildDate=2024-11-29T15:36:56Z VendorInfo=gohugoio

Does this issue reproduce with the latest release?

Yes

Description

Using the default blockquote render hook implementation from https://gohugo.io/render-hooks/blockquotes/#example causes a final p letter in the alerttitle to be removed. This is not an issue of the render hook.

> [!note] Heads up
> The letter "p" does not display properly in the title.

See home page of /~https://github.com/McShelby/hugo-testing/tree/hugo-github-issue-13119

[McShelby]

The reason lies in gohugoio/hugo/markup/goldmark/blockquotes/blockquotes.go:168 where strings.TrimRight needs to be replaced with strings.TrimSuffix.

[github-actions]

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