docs: Remove duplicate reference definitions

why: Myst was warning about duplicate markdown reference definitions
what:
- Remove duplicate [uv] reference in developing.md
- Remove duplicate [uv] reference in CHANGES
- Remove duplicate [ptpython] reference in quickstart.md

Author: tony

CHANGES

@@ -569,8 +569,6 @@ _Maintenance only, no bug fixes or new features_
 
   via [ruff 0.4.2](https://github.com/astral-sh/ruff/blob/v0.4.2/CHANGELOG.md).
 
-[uv]: https://github.com/astral-sh/uv
-
 ### Documentation
 
 - Fix docstrings in `query_list` for `MultipleObjectsReturned` and

docs/developing.md

@@ -285,7 +285,6 @@ git push --tags
 ```
 
 [twine]: https://twine.readthedocs.io/
-[uv]: https://github.com/astral-sh/uv
 [entr(1)]: http://eradman.com/entrproject/
 [ruff format]: https://docs.astral.sh/ruff/formatter/
 [ruff]: https://ruff.rs

docs/quickstart.md

@@ -491,4 +491,3 @@ and our [test suite] (see {ref}`development`.)
 
 [workspacebuilder.py]: https://github.com/tmux-python/libtmux/blob/master/libtmux/workspacebuilder.py
 [test suite]: https://github.com/tmux-python/libtmux/tree/master/tests
-[ptpython]: https://github.com/prompt-toolkit/ptpython