docs: fix README typo in PyPI link (#225)

Author: tswast

README.rst

@@ -13,7 +13,7 @@ Python Client for Cloud BigQuery Reservation
 .. |pypi| image:: https://img.shields.io/pypi/v/google-cloud-bigquery-reservation.svg
  :target: https://pypi.org/project/google-cloud-bigquery-reservation/
 .. |versions| image:: https://img.shields.io/pypi/pyversions/google-cloud-bigquery-reservation.svg
- :target: https://pypi.org/project/google-cloud-bigqyery-reservation/
+ :target: https://pypi.org/project/google-cloud-bigquery-reservation/
 .. _BigQuery Reservation API: https://cloud.google.com/bigquery/docs/reference/reservations/rpc
 .. _Client Library Documentation: https://cloud.google.com/python/docs/reference/bigqueryreservation/latest
 .. _Product Documentation: https://cloud.google.com/bigquery/docs/reservations-intro