fix(cli): remove tpl_ prefix from template element in updates.xml

Joomla stores templates in #__extensions without a prefix (bare name
like "mokoonyx"), not "tpl_mokoonyx". The tpl_ prefix prevented
Joomla from matching the update to the installed extension.

Authored-by: Moko Consulting
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

cli/updates_xml_build.php

@@ -374,13 +374,12 @@ function buildEntry(
     $lines[] = "    <name>{$displayName}</name>";
     $lines[] = "    <description>{$displayName} {$stabilityLabel} build.</description>";
     // Element in updates.xml must match what Joomla stores in #__extensions.
-    // Plugins are stored as bare element (folder handles grouping).
-    // All other types need their prefix: mod_, com_, tpl_, pkg_, lib_.
+    // Plugins and templates are stored as bare element (no prefix).
+    // Other types need their prefix: mod_, com_, pkg_, lib_.
     $prefixMap = [
         'package'   => 'pkg_',
         'module'    => 'mod_',
         'component' => 'com_',
-        'template'  => 'tpl_',
         'library'   => 'lib_',
     ];
     $dbElement = isset($prefixMap[$extType]) ? $prefixMap[$extType] . $extElement : $extElement;