Backport PR #52486 on branch 2.0.x (DOC: Fix missing read_parquet from list of fns with new keyword arg dtype_backend) (#52491)

Backport PR #52486: DOC: Fix missing `read_parquet` from list of fns with new keyword arg `dtype_backend`

Co-authored-by: Alex Malins <github@alexmalins.com>

Author: meeseeksmachine

doc/source/whatsnew/v2.0.0.rst

@@ -120,6 +120,7 @@ The following functions gained a new keyword ``dtype_backend`` (:issue:`36712`)
 * :func:`read_sql`
 * :func:`read_sql_query`
 * :func:`read_sql_table`
+* :func:`read_parquet`
 * :func:`read_orc`
 * :func:`read_feather`
 * :func:`read_spss`