chore: Fix whitespace in error message (#3154)

runtime/src/bank.rs

@@ -1735,7 +1735,7 @@ impl Bank {
         // from the passed in genesis_config instead (as new()/new_with_paths() already do)
         assert_eq!(
             bank.genesis_creation_time, genesis_config.creation_time,
-            "Bank snapshot genesis creation time does not match genesis.bin creation time.\
+            "Bank snapshot genesis creation time does not match genesis.bin creation time. \
              The snapshot and genesis.bin might pertain to different clusters"
         );
         assert_eq!(bank.ticks_per_slot, genesis_config.ticks_per_slot);