Add link to the new page

Author: peterguy

docs/code-search/features.mdx

@@ -126,7 +126,7 @@ When you run a search, you can compare the results from two different revisions
 
 From here, you can execute file and directory filtering and compare large diffs, making it easier to navigate and manage.
 
-This file picker is useful when comparing branches with thousands of changed files and allows you to select specific files or directories to focus on. You can filter files directly by constructing a URL with multiple file paths or use a compressed file list for even larger selections.
+This file picker is useful when comparing branches with thousands of changed files and allows you to select specific files or directories to focus on. You can [filter files directly](/code-search/compare-file-filtering) by constructing a URL with multiple file paths or use a compressed file list for even larger selections.
 
 ![file-and-directory-filtering](https://storage.googleapis.com/sourcegraph-assets/Docs/filter-by-file-dir-on-compare.png)