chore(python): fix typo in README (#320)

Source-Link: googleapis/synthtool@93e1685
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-python:latest@sha256:631b4a35a4f9dd5e97740a97c4c117646eb85b35e103844dc49d152bd18694cd

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
Co-authored-by: Victor Chudnovsky <vchudnov@google.com>

Author: gcf-owl-bot[bot]

.github/.OwlBot.lock.yaml

@@ -13,5 +13,5 @@
 # limitations under the License.
 docker:
   image: gcr.io/cloud-devrel-public-resources/owlbot-python:latest
-  digest: sha256:04c35dc5f49f0f503a306397d6d043685f8d2bb822ab515818c4208d7fb2db3a
-# created: 2025-01-16T15:24:11.364245182Z
+  digest: sha256:631b4a35a4f9dd5e97740a97c4c117646eb85b35e103844dc49d152bd18694cd
+# created: 2025-02-05T14:40:56.685429494Z