Fix internal XML documentation for restore-symlink-metadata.
Fix internal XML documentation for restore-symlink-metadata.

The previous documentation appears to have been a copy/paste error.

duplicati/duplicati,mnaiman/duplicati,duplicati/duplicati,mnaiman/duplicati,duplicati/duplicati,mnaiman/duplicati,duplicati/duplicati,duplicati/duplicati,mnaiman/duplicati,mnaiman/duplicati