docs: fix spelling typos in docs and core docstrings

docs/changelog.md

@@ -27,7 +27,7 @@ Thanks @gaoflow, @prateek-dagar
 ### Added
 - Support `DictConfigurator` prefixes for `rename_fields` and `static_fields`. [#45](https://github.com/nhairs/python-json-logger/pull/45)
   - Allows using values like `ext://sys.stderr` in `fileConfig`/`dictConfig` value fields.
-- Support comma seperated lists for Formatter `fmt` (`style=","`) e.g. `"asctime,message,levelname"` [#15](https://github.com/nhairs/python-json-logger/issues/15)
+- Support comma separated lists for Formatter `fmt` (`style=","`) e.g. `"asctime,message,levelname"` [#15](https://github.com/nhairs/python-json-logger/issues/15)
   - Note that this style is specific to `python-json-logger` and thus care should be taken not to pass this format to other logging Formatter implementations.
 - Supports sequences of strings (e.g. lists and tuples) of field names for Formatter `fmt`. [#16](https://github.com/nhairs/python-json-logger/issues/16)
 

docs/contributing.md

@@ -114,17 +114,17 @@ For examples of how to support a third-party encoder see `orjson.py` and `msgspe
 The following encoders have been considered and rejected:
 
 - [simplejson](https://github.com/simplejson/simplejson) - as of 2026-03-29 is ranked ~370 with ~55M downloads / month. Due to errors when handling `bytes` objects and lack of interest from the community ([see comment for more details](https://github.com/nhairs/python-json-logger/pull/64#issuecomment-4149326316)).
-- [ultrajson](https://github.com/ultrajson/ultrajson) (`usjon`) - as of 2026-03-29 is ranked ~630 with ~27 downloads / month. Due to errors when handling `bytes` objects and lack of interest from the community ([see comment for more details](https://github.com/nhairs/python-json-logger/pull/64#issuecomment-4149326316)). Additionally it is in maintence mode.
+- [ultrajson](https://github.com/ultrajson/ultrajson) (`usjon`) - as of 2026-03-29 is ranked ~630 with ~27 downloads / month. Due to errors when handling `bytes` objects and lack of interest from the community ([see comment for more details](https://github.com/nhairs/python-json-logger/pull/64#issuecomment-4149326316)). Additionally it is in maintenance mode.
 - [python-rapidjson](https://github.com/python-rapidjson/python-rapidjson) - as of 2026-03-22 is ranked ~1800 with ~4.5M downloads / month.
 - [pysimdjson](https://github.com/TkTech/pysimdjson) - as of 2026-03-22 is ranked ~4200 with >1M downloads / month.
 - [yapic.json](https://github.com/zozzz/yapic.json) - as of 2026-03-22 is not in top 15K packages.
 - [cysimdjson](https://github.com/TeskaLabs/cysimdjson) - as of 2026-03-22 is not in top 15K packages.
 
-### Versioning and breaking compatability
+### Versioning and breaking compatibility
 
 This project uses semantic versioning.
 
-In general backwards compatability is always preferred. This library is widely used and not particularly sophisticated and as such there must be a good reason for breaking changes.
+In general backwards compatibility is always preferred. This library is widely used and not particularly sophisticated and as such there must be a good reason for breaking changes.
 
 Feature changes MUST be compatible with all [security supported versions of Python](https://endoflife.date/python) and SHOULD be compatible with all unsupported versions of Python where [recent downloads over the last 90 days exceeds 5% of all downloads](https://pypistats.org/packages/python-json-logger).
 

src/pythonjsonlogger/core.py

@@ -174,7 +174,7 @@ def __init__(
 
         *Added in 4.0*:
 
-        - `fmt` now supports comma seperated lists (`style=","`). Note that this style is specific
+        - `fmt` now supports comma separated lists (`style=","`). Note that this style is specific
           to `python-json-logger` and thus care should be taken to not to pass this format to other
           logging Formatter implementations.
         - `fmt` now supports sequences of strings (e.g. lists and tuples) of field names.