Merge pull request #931 from ELHoussineT/patch-1

docs: Indicate that `restore-keys` uses prefix in README

README.md

@@ -34,7 +34,7 @@ If you are using this inside a container, a POSIX-compliant `tar` needs to be in
 
 * `path` - A list of files, directories, and wildcard patterns to cache and restore. See [`@actions/glob`](https://github.com/actions/toolkit/tree/main/packages/glob) for supported patterns.
 * `key` - An explicit key for restoring and saving the cache
-* `restore-keys` - An ordered list of keys to use for restoring stale cache if no cache hit occurred for key. Note
+* `restore-keys` - An ordered list of prefix-matched keys to use for restoring stale cache if no cache hit occurred for key. Note
 `cache-hit` returns false in this case.
 
 #### Environment Variables