Update 107-eleventy.md (#1004)

* Update 107-eleventy.md

* added summary

* added resource

* Update content/roadmaps/100-frontend/content/120-static-site-generators/107-eleventy.md

Co-authored-by: Kamran Ahmed <kamranahmed.se@gmail.com>

content/roadmaps/100-frontend/content/120-static-site-generators/107-eleventy.md

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 # Eleventy
+
+Eleventy (11ty) is a simple to use, easy to customize, highly performant and powerful static site generator with a helpful set of plugins (e.g. navigation, build-time image transformations, cache assets). Pages can be built and written with a variety of template languages (HTML, Markdown, JavaScript, Liquid, Nunjucks, Handlebars, Mustache, EJS, Haml, Pug or JS template literals). But it also offers the possibility to dynamically create pages from local data or external sources that are compiled at build time. It has zero client-side JavaScript dependencies.
+
+<ResourceGroupTitle>Free Content</ResourceGroupTitle>
+<BadgeLink colorScheme='blue' badgeText='Website' href='https://www.11ty.dev/'>Official Website</BadgeLink>
+<BadgeLink badgeText='Watch' href='https://www.youtube.com/watch?v=-dM6AmNmMFA'>Introduction to Eleventy</BadgeLink>