fix: a check sample ends on code 3

The events transcript on the installer page is a --check run that finds
files missing. Since November such a run ends on 3, as the Exit status
table says, and the sample still showed 1.

tests/test_site_wiki.py

@@ -956,7 +956,8 @@ class EventsTranscript(unittest.TestCase):
                 self.assertEqual(list(event), ["event", *keys[event["event"]]])
         self.assertEqual(events[0]["event"], "start")
         self.assertEqual(events[0]["mode"], "check")
-        self.assertEqual(events[-1], {"event": "end", "code": 1})
+        # --check that finds files missing ends on 3 (the Exit status table).
+        self.assertEqual(events[-1], {"event": "end", "code": 3})
 
 
 class OneOptionsTable(unittest.TestCase):

wiki/installer.md

@@ -1877,7 +1877,7 @@ RetroArch folder that holds only `scph5501.bin`, in the order written:
 {"event": "file", "platform": "retroarch", "dest": "scph5501.bin", "systems": ["sony-playstation"], "size": 524288, "state": "present"}
 {"event": "check", "platform": "retroarch", "name": "RetroArch", "bios_dir": "system", "files": 118, "present": 1, "missing": 117, "wrong_hash": 0, "bytes_needed": 344457216, "data_missing": 0, "not_installable": 0}
 {"event": "summary", "mode": "check", "installed": 0, "up_to_date": 1, "pending": 117, "failed": [], "skipped": [], "left_out": [], "kept": [], "interrupted": false}
-{"event": "end", "code": 1}
+{"event": "end", "code": 3}
 ```
 
 ## Environment overrides