Fix a typo in xml docs for ApiVersion

Author: altso

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

@@ -27,7 +27,7 @@ public ApiVersionDescription( ApiVersion apiVersion, string groupName, bool depr
         public ApiVersion ApiVersion { get; }
 
         /// <summary>
-        /// Gets the API version group name.f
+        /// Gets the API version group name.
         /// </summary>
         /// <value>The group name for the API version.</value>
         public string GroupName { get; }