CHANGELOG: add PR number

CHANGELOG.md

@@ -9,7 +9,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ### Added
 - Add conversions between `OsStr`/`OsString`/`Path`/`PathBuf` and Python strings. [#1379](https://github.com/PyO3/pyo3/pull/1379)
 - Add FFI definition `PyCFunction_CheckExact` for Python 3.9 and later. [#1425](https://github.com/PyO3/pyo3/pull/1425)
-- Add FFI definition `PyIndex_Check` under the limited C API.
+- Add FFI definition `PyIndex_Check` under the limited C API. [#1436](https://github.com/PyO3/pyo3/pull/1436)
 
 ### Changed
 - Change `PyTimeAcces::get_fold()` to return a `bool` instead of a `u8`. [#1397](https://github.com/PyO3/pyo3/pull/1397)
@@ -25,7 +25,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ### Fixed
 - Remove FFI definition `PyCFunction_ClearFreeList` for Python 3.9 and later. [#1425](https://github.com/PyO3/pyo3/pull/1425)
 - `PYO3_CROSS_LIB_DIR` enviroment variable no long required when compiling for x86-64 Python from macOS arm64 and reverse. [#1428](https://github.com/PyO3/pyo3/pull/1428)
-- Ensure `PyIter_Check` is available for Python < 3.8 under abi3. Implement `PyTryFrom` for `PyIterator` where under Python < 3.8 under abi3.
+- Ensure `PyIter_Check` is available for Python < 3.8 under abi3. Implement `PyTryFrom` for `PyIterator` where under Python < 3.8 under abi3. [#1436](https://github.com/PyO3/pyo3/pull/1436)
 
 ## [0.13.2] - 2021-02-12
 ### Packaging