Fix diagnostic rule to be warning and not error (#1711)

* Fix rule to be warning and not error

* Update URL

Author: manodasanW

src/Authoring/WinRT.SourceGenerator/WinRTRules.cs

@@ -18,7 +18,7 @@ private static DiagnosticDescriptor MakeRule(string id, string title, string mes
                 category: "Usage",
                 defaultSeverity: isError ? DiagnosticSeverity.Error : isWarning? DiagnosticSeverity.Warning : DiagnosticSeverity.Info,
                 isEnabledByDefault: true,
-                helpLinkUri: "https://github.com/microsoft/CsWinRT/tree/master/src/Authoring/WinRT.SourceGenerator/AnalyzerReleases.Unshipped.md");
+                helpLinkUri: "https://github.com/microsoft/CsWinRT/tree/master/src/Authoring/WinRT.SourceGenerator/AnalyzerReleases.Shipped.md");
         }
 
         public static DiagnosticDescriptor PrivateGetterRule = MakeRule(
@@ -197,6 +197,7 @@ private static DiagnosticDescriptor MakeRule(string id, string title, string mes
             "CsWinRT1029",
             CsWinRTDiagnosticStrings.ClassImplementsOldProjection_Brief,
             CsWinRTDiagnosticStrings.ClassImplementsOldProjection_Text,
+            false,
             true);
 
         public static DiagnosticDescriptor ClassNotAotCompatibleOldProjectionInfo = MakeRule(