fix: remove trailing whitespace in config.sample.yaml

Co-Authored-By: Jayant Krishnamurthy <[email protected]>

Author: devin-ai-integration[bot]

apps/fortuna/config.sample.yaml

@@ -78,6 +78,5 @@ keeper:
     value: 0xabcd
     # For production, you can store the private key in a file.
     # file: keeper-key.txt
-  
   # Number of blocks to wait before processing new blocks (in addition to reveal_delay_blocks)
   delay_blocks: 5