docs: point to gas! in Gas::record_cost (#1413)

crates/interpreter/src/gas.rs

@@ -121,7 +121,7 @@ impl Gas {
     ///
     /// Returns `false` if the gas limit is exceeded.
     #[inline]
-    #[must_use]
+    #[must_use = "prefer using `gas!` instead to return an out-of-gas error on failure"]
     pub fn record_cost(&mut self, cost: u64) -> bool {
         let (remaining, overflow) = self.remaining.overflowing_sub(cost);
         let success = !overflow;