Update CODEOWNERS

Co-authored-by: Eric <eashaw@sailsjs.com>

CODEOWNERS

@@ -77,7 +77,7 @@ go.mod @fleetdm/go
 # (see website/config/custom.js for DRIs of other paths not listed here)
 ##############################################################################################
 /docs                                           @rachaelshaw @eashaw @noahtalerman
-/docs/Using-Fleet/REST-API.md                   @rachaelshaw @lukeheath # « REST API reference documentation
+/docs/REST\ API/rest-api.md                   @rachaelshaw @lukeheath # « REST API reference documentation
 /docs/Contributing/API-for-contributors.md      @rachaelshaw @lukeheath # « Advanced / contributors-only API reference documentation
 /schema                                         @eashaw # « Data tables (osquery/fleetd schema) documentation
 /docs/Deploy/_kubernetes/ @dherder # « Kubernetes best practice