Add prettier-plugin-gherkin to the community plugins list (#15919)

Add prettier-plugin-gherkin in community plugins

docs/plugins.md

@@ -49,6 +49,7 @@ Strings provided to `plugins` are ultimately passed to [`import()` expression](h
 - [`prettier-plugin-astro`](https://github.com/withastro/prettier-plugin-astro) by [**@withastro contributors**](https://github.com/withastro/prettier-plugin-astro/graphs/contributors)
 - [`prettier-plugin-elm`](https://github.com/gicentre/prettier-plugin-elm) by [**@giCentre**](https://github.com/gicentre)
 - [`prettier-plugin-erb`](https://github.com/adamzapasnik/prettier-plugin-erb) by [**@adamzapasnik**](https://github.com/adamzapasnik)
+- [`prettier-plugin-gherkin`](https://github.com/mapado/prettier-plugin-gherkin) by [**@mapado**](https://github.com/mapado)
 - [`prettier-plugin-glsl`](https://github.com/NaridaL/glsl-language-toolkit/tree/main/packages/prettier-plugin-glsl) by [**@NaridaL**](https://github.com/NaridaL)
 - [`prettier-plugin-go-template`](https://github.com/NiklasPor/prettier-plugin-go-template) by [**@NiklasPor**](https://github.com/NiklasPor)
 - [`prettier-plugin-java`](https://github.com/jhipster/prettier-java) by [**@JHipster**](https://github.com/jhipster)