Generate the correct editLink value

modules/docs/src/Volo.Docs.Domain/Volo/Docs/GitHub/Documents/GithubDocumentSource.cs

@@ -38,7 +38,7 @@ namespace Volo.Docs.GitHub.Documents
             var rawDocumentUrl = rawRootUrl + documentName;
             var isNavigationDocument = documentName == project.NavigationDocumentName;
             var isParameterDocument = documentName == project.ParametersDocumentName;
-            var editLink = rootUrl.ReplaceFirst("/tree/", "/blob/") + languageCode + "/" + documentName;
+            var editLink = rootUrl.ReplaceFirst("/tree/", "/blob/").EnsureEndsWith('/') + languageCode + "/" + documentName;
             var localDirectory = "";
             var fileName = documentName;