Clarify metadata refresh skip paths help text across all languages

Update the help text for 'Metadata Refresh Skip Paths' setting to explicitly
state that paths should be relative to the 'model root directory' instead of
just saying 'relative folder paths', which was ambiguous.

Updated translations:
- English (en)
- Chinese Simplified (zh-CN)
- Chinese Traditional (zh-TW)
- Japanese (ja)
- Korean (ko)
- Russian (ru)
- German (de)
- French (fr)
- Spanish (es)
- Hebrew (he)

locales/zh-CN.json

@@ -295,7 +295,7 @@
         "metadataRefreshSkipPaths": {
             "label": "元数据刷新跳过路径",
             "placeholder": "示例：temp, archived/old, test_models",
-            "help": "批量刷新元数据（\"获取全部元数据\"）时跳过这些目录路径中的模型。输入以逗号分隔的相对文件夹路径。",
+            "help": "批量刷新元数据（\"获取全部元数据\"）时跳过这些目录路径中的模型。输入相对于模型根目录的文件夹路径，以逗号分隔。",
             "validation": {
                 "noPaths": "请输入至少一个路径，以逗号分隔。",
                 "saveFailed": "无法保存跳过路径：{message}"