docs: fix console=True stream claim, stdout -> stderr (StreamHandler default)

Signed-off-by: disqualifier <dev@disqualifier.me>

README.md

@@ -29,7 +29,7 @@ from log_setup import setup_logging
 setup_logging(name="run", level="INFO")     # daily rotation, logs/ dir, gzip (file only)
 
 log = logging.getLogger(__name__)
-log.info("started")                          # -> ./run.log  (add console=True for stdout too)
+log.info("started")                          # -> ./run.log  (add console=True for stderr too)
 ```
 
 Call it once, at the app's entry point — before the rest of the app runs. Every module
@@ -57,7 +57,7 @@ emits; the records land in the configured root.
 - **Retention** = `backup_count` (default 14) for every mode — unless tiered retention is
   enabled (below). For `rotate="size"`, `backup_count=0` is "keep none" (not "disable
   rotation") — see the `size` bullet above and the note at the bottom of this section.
-- **console=True** (off by default) also logs to stdout in the same format — opt in when
+- **console=True** (off by default) also logs to stderr in the same format — opt in when
   you want live terminal output alongside the file.
 
 The `name` you pass is normalized so it produces exactly one `.log`: `name="latest"` and
@@ -174,7 +174,7 @@ setup_logging(
     keep_compressed=None,     # tiered: next M rolled logs kept GZIPPED (opt-in)
     max_bytes=10_000_000,     # only for rotate="size"
     compress=True,            # gzip rolled files
-    console=False,            # also log to stdout (off by default; opt in)
+    console=False,            # also log to stderr (off by default; opt in)
     queue=False,              # route through a background QueueListener (async-friendly)
     output="text",            # "text" (human, local time) | "json" (structured, UTC)
     fmt=None,                 # override the text format string (text mode only)