Fix typo in README (open-telemetry#1832)

Author: joegoldman2

README.md

@@ -37,7 +37,7 @@ repository](https://github.com/open-telemetry/community/blob/main/community-memb
 
 [@open-telemetry/dotnet-contrib-approvers](https://github.com/orgs/open-telemetry/teams/dotnet-contrib-approvers):
 
-The are no approvers today.
+There are no approvers today.
 
 *Find more about the approver role in [community
 repository](https://github.com/open-telemetry/community/blob/main/community-membership.md#approver).*