Update api.mdx

Co-authored-by: Benoît Rouleau <[email protected]>

Author: 0xa3k5

website/src/pages/en/subgraphs/developing/creating/graph-ts/api.mdx

@@ -500,7 +500,7 @@ export function handleTransfer(event: TransferEvent) {
 
 As long as the `ERC20Contract` on Ethereum has a public read-only function called `symbol`, it can be called with `.symbol()`. For public state variables a method with the same name is created automatically.
 
-Any other contract that is part of the subgraph can be imported from the generated code and can be bound to a valid address. Example of that is presented within the steps below:
+Any other contract that is part of the subgraph can be imported from the generated code and can be bound to a valid address. An example of that is presented within the steps below:
 
 - Extend `subgraph.yaml` file with desired ABI file: