chore: Update discovery artifacts (#1410)

## Deleted keys were detected in the following stable discovery artifacts:
managedidentities v1 https://github.com/googleapis/google-api-python-client/commit/e96adbb1ba3e4e56d916cc28474f85543f17ad0e

## Discovery Artifact Change Summary:
feat(appengine): update the api https://github.com/googleapis/google-api-python-client/commit/ffcf86035a751e98a763c8a2d54b70d3a55ca14d
feat(containeranalysis): update the api https://github.com/googleapis/google-api-python-client/commit/9a1c70b7df3e074fc9fbd0eebdaf75a91046078c
feat(documentai): update the api https://github.com/googleapis/google-api-python-client/commit/07a6e774ac185442a99437896eaee774946b5846
feat(drive): update the api https://github.com/googleapis/google-api-python-client/commit/773910fdf25b084aa3623d24fe99c8a1330fbecb
feat(managedidentities): update the api https://github.com/googleapis/google-api-python-client/commit/e96adbb1ba3e4e56d916cc28474f85543f17ad0e
feat(spanner): update the api https://github.com/googleapis/google-api-python-client/commit/87da2f3605ec1b8986324cddc33f2b5601d3e896
diff --git a/docs/dyn/managedidentities_v1.projects.locations.html b/docs/dyn/managedidentities_v1.projects.locations.html
index 21f2220..f0a3403 100644
--- a/docs/dyn/managedidentities_v1.projects.locations.html
+++ b/docs/dyn/managedidentities_v1.projects.locations.html
@@ -131,7 +131,7 @@
 Args:
   name: string, The resource that owns the locations collection, if applicable. (required)
   filter: string, A filter to narrow down results to a preferred subset. The filtering language accepts strings like "displayName=tokyo", and is documented in more detail in [AIP-160](https://google.aip.dev/160).
-  pageSize: integer, The maximum number of results to return. If not set, the service will select a default.
+  pageSize: integer, The maximum number of results to return. If not set, the service selects a default.
   pageToken: string, A page token received from the `next_page_token` field in the response. Send that page token to receive the subsequent page.
   x__xgafv: string, V1 error format.
     Allowed values