Steps to replicate the issue:

• Set your interface language on Meta-Wiki to German (for example)
• Edit a wish
• The edit summary says "Updating the wish..."
• Vote for a wish

What happens?:
The edit summary says "Unterstützungsstimme hinzufügen..."

What should have happened instead?:
The edit summary says "Adding support vote..."

Since Meta is a multilingual wiki with users with various linguistic backgrounds, summaries should be in the site language (English).