chore: Adding release-please annotations to readme files (#1781) (#1240)

* chore: Adding release-please annotations to readme files Source-Link: googleapis/synthtool@327d46f Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-java:latest@sha256:bf5639d265d70f6137d57d42ae781a6f4e26d4085ff4e018e71350480f9b3996 Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

Author: gcf-owl-bot[bot]

.github/.OwlBot.lock.yaml

@@ -13,4 +13,4 @@
 # limitations under the License.
 docker:
  image: gcr.io/cloud-devrel-public-resources/owlbot-java:latest
- digest: sha256:122497ed0931743ba584cd344b9bfc9a1d1c0d251781cbf352ec22b80ce88960
+ digest: sha256:bf5639d265d70f6137d57d42ae781a6f4e26d4085ff4e018e71350480f9b3996

README.md

@@ -64,6 +64,7 @@ If you are using SBT, add this to your dependencies:
 ```Scala
 libraryDependencies += "com.google.cloud" % "google-cloud-firestore" % "3.9.1"
 ```
+<!-- {x-version-update-end} -->
 
 ## Authentication