Update link to features.cc in documentation

Bug: none
Change-Id: Id4ab0b292e3236e853075b6d9366ecc24e42f34f
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/5946883
Reviewed-by: Ergün Erdoğmuş <[email protected]>
Auto-Submit: Wolfgang Beyer <[email protected]>
Commit-Queue: Ergün Erdoğmuş <[email protected]>

Author: wolfib

docs/contributing/settings-experiments-features.md

@@ -97,7 +97,7 @@ Chromium.
 
 ### Define a new `base::Feature`
 
-Add a new `base::Feature` to [`browser_features.cc`](https://crsrc.org/c/chrome/browser/browser_features.cc). This feature will automatically be available as a Chrome command line parameter:
+Add a new `base::Feature` to DevTools' [`features.cc`](https://crsrc.org/c/chrome/browser/devtools/features.cc). This feature will automatically be available as a Chrome command line parameter:
 
 ```cxx
 // in browser_features.cc