fix: typos in documentation files

perf-metrics/src/dashboard/opcode.rs

@@ -1380,7 +1380,7 @@ impl OpcodeStat {
 }
 
 // Return (total_gas, static_gas, dyn_gas).
-fn caculate_gas(opcode: u8, count: u64, total_gas: i128) -> (f64, u64, f64) {
+fn calculate_gas(opcode: u8, count: u64, total_gas: i128) -> (f64, u64, f64) {
     let (base_gas, is_static) = match MERGE_MAP[opcode as usize] {
         Some(opcode_info) => (opcode_info.1.gas, opcode_info.1.static_gas),
         None => return (0.0, 0, 0.0),
@@ -1433,7 +1433,7 @@ impl From<&OpcodeRecord> for OpcodeStats {
             opcode_stat.count = v.0;
             opcode_stat.time = v.1;
             opcode_stat.avg_cost = convert_cycles_to_ns_f64(v.1) / v.0 as f64;
-            let (op_total, op_static, op_dyn) = caculate_gas(op, v.0, v.2);
+            let (op_total, op_static, op_dyn) = calculate_gas(op, v.0, v.2);
             opcode_stat.mgas = op_total / MGAS_TO_GAS as f64;
             opcode_stat.static_gas = Some(op_static);
             opcode_stat.dyn_gas = Some(op_dyn);

perf-metrics/src/metrics/metric.rs

@@ -30,7 +30,7 @@ pub enum MetricEvent {
     ExecutionStageTime {
         /// Current block_number.
         block_number: u64,
-        /// excution duration record.
+        /// execution duration record.
         record: ExecutionDurationRecord,
     },
     /// Amount of txs and gas in a block.