README.md: wrap file contents in a `details` element (#35452)

Co-authored-by: Mark Otto <markd.otto@gmail.com>

diff --git a/README.md b/README.md
index eead6278088ef0b27cc445d5e80513f3b4641a16..2ee97158e71d5c106f2085cca40f3da1a989b277 100644 (file)
--- a/README.md
+++ b/README.md
@@ -77,7 +77,9 @@ Read the [Getting started page](https://getbootstrap.com/docs/5.1/getting-starte
 
 ## What's included
 
-Within the download you'll find the following directories and files, logically grouping common assets and providing both compiled and minified variations. You'll see something like this:
+Within the download you'll find the following directories and files, logically grouping common assets and providing both compiled and minified variations.
+
+<details><summary>Download contents</summary>
 
 ```text
 bootstrap/
@@ -128,6 +130,7 @@ bootstrap/
     ├── bootstrap.min.js
     └── bootstrap.min.js.map
 ```
+</details>
 
 We provide compiled CSS and JS (`bootstrap.*`), as well as compiled and minified CSS and JS (`bootstrap.min.*`). [Source maps](https://developers.google.com/web/tools/chrome-devtools/javascript/source-maps) (`bootstrap.*.map`) are available for use with certain browsers' developer tools. Bundled JS files (`bootstrap.bundle.js` and minified `bootstrap.bundle.min.js`) include [Popper](https://popper.js.org/).