adjust json spec for total count

Author: hmdros

test/lib/rails_stats/json_formatter_test.rb

@@ -116,12 +116,12 @@
     }, {
       "name": "Total",
       "files": "37",
-      "lines": "493",
-      "loc": "160",
+      "lines": "491",
+      "loc": "158",
       "classes": "12",
       "methods": "1",
       "m_over_c": "0",
-      "loc_over_m": "158",
+      "loc_over_m": "156",
       "code_to_test_ratio": "0.0",
       "total": true
     }, {