docs(fr-033): C# — fix 2 stale comments naming the deleted TemplateTypesProvider

@xmlText is now registered by PromptMetaDataProvider (the ui/prompt re-home renamed
TemplateProvider → metaobjects-prompt). Comment-only.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: dmealing

server/csharp/MetaObjects.Codegen/Runtime/ExtractObject.cs

@@ -137,7 +137,7 @@ private static FieldSpec FieldSpecFor(MetaField field, MetaObject owner, Format
         if (IsArrayType(field))
             return FieldSpec.ScalarArray(name, kind, required);
         // @xmlText: a (non-array) scalar field marked to receive its element's XML text content
-        // (the template/output domain marker — registered by TemplateTypesProvider).
+        // (the template/output domain marker — registered by PromptMetaDataProvider).
         if (IsXmlText(field))
             return FieldSpec.TextContentField(name, kind, required);
         // Numeric range: source the bound from the field's numeric validator (@min/@max) — the single

server/csharp/MetaObjects/Template/TemplateConstants.cs

@@ -136,7 +136,7 @@ public static class TemplateConstants
     // @xmlText — FIELD-level marker (boolean) for the tolerant extract engine: this
     // field receives its element's TEXT CONTENT when a template.output response is
     // parsed from XML (JAXB @XmlValue / Jackson @JacksonXmlText / .NET [XmlText]).
-    // Registered on field.* by TemplateTypesProvider (the prompt/output domain owns
+    // Registered on field.* by PromptMetaDataProvider (the prompt/output domain owns
     // this extract concern — NOT a core field property). No effect for @format: json.
     // Mirrors Java TemplateConstants.ATTR_XML_TEXT and TS FIELD_ATTR_XML_TEXT.
     // -----------------------------------------------------------------------