Implement suggestion from the code quality analyzer: Calls to 'string.IndexOf' where the result is used to check for the presence/absence of a substring can be replaced by 'string.Contains'

Author: Jericho

src/GitReleaseManager.Core/MappingProfiles/GitHubProfile.cs

@@ -13,7 +13,7 @@ public GitHubProfile()
             CreateMap<Octokit.Issue, Model.Issue>()
                 .ForMember(dest => dest.PublicNumber, act => act.MapFrom(src => src.Number))
                 .ForMember(dest => dest.InternalNumber, act => act.MapFrom(src => src.Id))
-                .ForMember(dest => dest.IsPullRequest, act => act.MapFrom(src => src.HtmlUrl.IndexOf("/pull/", StringComparison.OrdinalIgnoreCase) >= 0))
+                .ForMember(dest => dest.IsPullRequest, act => act.MapFrom(src => src.HtmlUrl.Contains("/pull/", StringComparison.OrdinalIgnoreCase)))
                 .ReverseMap();
             CreateMap<Model.IssueComment, Octokit.IssueComment>().ReverseMap();
             CreateMap<Model.ItemState, Octokit.ItemState>().ReverseMap();