Fix REST-API documentation for HTTP GET files-owners

Address documentation issue of the new getFilesOwners
REST-API introduced in I4167989fe.

Change-Id: Ibcbcfb410be71158ce8b078a231e19d05c47ccd6
diff --git a/owners/src/main/resources/Documentation/rest-api.md b/owners/src/main/resources/Documentation/rest-api.md
index 007151a..4fb4285 100644
--- a/owners/src/main/resources/Documentation/rest-api.md
+++ b/owners/src/main/resources/Documentation/rest-api.md
@@ -4,7 +4,7 @@
 its associated labels and votes:
 
 ```bash
-GET /changes/{change-id}/revisions/{revision-id}/owners~getFilesOwners
+GET /changes/{change-id}/revisions/{revision-id}/owners~files-owners
 
 {
   "files": {