correct ApiVersionDescription.IsDeprecated docs

When some API versions are partially deprecated, IsDeprecated returns false (not true).

Author: lancehilliard

src/Microsoft.AspNetCore.Mvc.Versioning.ApiExplorer/ApiVersionDescription.cs

@@ -39,8 +39,8 @@ public ApiVersionDescription( ApiVersion apiVersion, string groupName, bool depr
         /// <remarks>An API version will only be described as deprecated when all
         /// all corresponding service implementations are also deprecated. It is
         /// possible that some API versions may be partially deprecated, in which
-        /// case this property will return <c>true</c>, but individual actions
+        /// case this property will return <c>false</c>, but individual actions
         /// may report that they are deprecated.</remarks>
         public bool IsDeprecated { get; }
     }
-}
+}