Fix a typo

src/contract_wrappers/contract_wrapper.ts

@@ -122,7 +122,7 @@ export class ContractWrapper {
     }
     private async _reconcileBlockAsync(): Promise<void> {
         const latestBlock = await this._web3Wrapper.getBlockAsync(BlockParamLiteral.Latest);
-        // We need to coerce to Block type cause Web3.Block includes types for mempool bloks
+        // We need to coerce to Block type cause Web3.Block includes types for mempool blocks
         (this._blockAndLogStreamer as BlockAndLogStreamer).reconcileNewBlock(latestBlock as any as Block);
     }
 }