Initializing PageOffset to be 1 (instead of default 0) so that the 'next' pagination link is set properly when no 'page[number]' is passed in the query string.

Author: nwise

src/JsonApiDotNetCore/Internal/Query/PageQuery.cs

@@ -3,6 +3,6 @@ namespace JsonApiDotNetCore.Internal.Query
     public class PageQuery
     {
        public int PageSize { get; set; }
-       public int PageOffset { get; set; }
+       public int PageOffset { get; set; } = 1;
     }
 }