Hide generated files only on github

Author: soltysh

.gitattributes

@@ -1,11 +1,11 @@
 hack/verify-flags/known-flags.txt merge=union
 test/test_owners.csv merge=union
 
-**/zz_generated.*.go -diff linguist-generated=true
-**/types.generated.go -diff linguist-generated=true
-**/generated.pb.go -diff linguist-generated=true
-**/generated.proto -diff
-**/types_swagger_doc_generated.go -diff linguist-generated=true
-docs/api-reference/** -diff linguist-generated=true
-api/swagger-spec/*.json -diff linguist-generated=true
-api/openapi-spec/*.json -diff linguist-generated=true
+**/zz_generated.*.go linguist-generated=true
+**/types.generated.go linguist-generated=true
+**/generated.pb.go linguist-generated=true
+**/generated.proto
+**/types_swagger_doc_generated.go linguist-generated=true
+docs/api-reference/** linguist-generated=true
+api/swagger-spec/*.json linguist-generated=true
+api/openapi-spec/*.json linguist-generated=true