fix format

Author: taskooh

core/src/env/srml/srml_only/impls.rs

@@ -123,10 +123,18 @@ where
         (caller, ext_caller, <Self as EnvTypes>::AccountId),
         (random_seed, ext_random_seed, <Self as EnvTypes>::Hash),
         (now, ext_now, <Self as EnvTypes>::Moment),
-        (block_number, ext_block_number, <Self as EnvTypes>::BlockNumber),
+        (
+            block_number,
+            ext_block_number,
+            <Self as EnvTypes>::BlockNumber
+        ),
         (gas_price, ext_gas_price, <Self as EnvTypes>::Balance),
         (gas_left, ext_gas_left, <Self as EnvTypes>::Balance),
-        (value_transferred, ext_value_transferred, <Self as EnvTypes>::Balance)
+        (
+            value_transferred,
+            ext_value_transferred,
+            <Self as EnvTypes>::Balance
+        )
     );
 
     unsafe fn r#return(data: &[u8]) -> ! {