DOC: add release note about revert for 1.0.5 (#34785)

Author: jorisvandenbossche

doc/source/whatsnew/v1.0.5.rst

@@ -15,16 +15,21 @@ including other versions of pandas.
 
 Fixed regressions
 ~~~~~~~~~~~~~~~~~
--
--
+
+- Fix regression in :meth:`read_parquet` when reading from file-like objects
+  (:issue:`34467`).
+- Fix regression in reading from public S3 buckets (:issue:`34626`).
+
+Note this disables the ability to read Parquet files from directories on S3
+again (:issue:`26388`, :issue:`34632`), which was added in the 1.0.4 release,
+but is now targeted for pandas 1.1.0.
 
 .. _whatsnew_105.bug_fixes:
 
 Bug fixes
 ~~~~~~~~~
 
 - Fixed building from source with Python 3.8 fetching the wrong version of NumPy (:issue:`34666`)
--
 
 Contributors
 ~~~~~~~~~~~~