Improve exclude-path regex precision

Use '(^|.*/)meta\.json$' instead of '.*meta\.json$' to match only
files exactly named 'meta.json', not files ending with 'meta.json'
like 'custom-meta.json'. This follows the original intent of the
glob pattern '**/meta.json'.

Co-authored-by: hotlong <50353452+hotlong@users.noreply.github.com>

Author: Copilot

.github/workflows/check-links.yml

@@ -26,8 +26,8 @@ jobs:
           # Use configuration file for path remapping and settings
           args: >-
             --config lychee.toml
-            --exclude-path '.*meta\.json$'
-            --exclude-path '.*meta\.cn\.json$'
+            --exclude-path '(^|.*/)meta\.json$'
+            --exclude-path '(^|.*/)meta\.cn\.json$'
             'content/**/*.md'
             'content/**/*.mdx'
             'README.md'