Port fix for dotnet/extensions#1041 to 2.2 (dotnet/extensions#1312)

* Update HealthCheckPublisherOptions.cs

This seems wrong.

Presumably fixes: https://github.com/aspnet/Extensions/issues/1041

(cherry picked from commit dotnet/extensions@b3c88d78fe)

* Update patchconfig.props\n\nCommit migrated from 1301f31b91

src/HealthChecks/HealthChecks/src/HealthCheckPublisherOptions.cs

@@ -60,7 +60,7 @@ namespace Microsoft.Extensions.Diagnostics.HealthChecks
                     throw new ArgumentException($"The {nameof(Period)} must not be infinite.", nameof(value));
                 }
 
-                _delay = value;
+                _period = value;
             }
         }