Fix typo

content/docs/iac/concepts/inputs-outputs/_index.md

@@ -328,7 +328,7 @@ One important distinction is the difference between a [stack output](/docs/iac/c
 
 Outputs are a unique and complex type in Pulumi which behave very much like [promises](https://en.wikipedia.org/wiki/Futures_and_promises). Simply put, outputs are a way of representing values that are not initially known but will become available once the infrastructure resource has completed provisioning, and this happens *asynchronously*. This is because the provisioning of resources is an asynchronous operation. It takes time for a cloud provider to complete the provisioning process, and Pulumi optimizes the process by [executing operations in parallel rather than sequentially](/docs/concepts/how-pulumi-works/#creation-and-deletion-order).
 
-Because outputs are asynchronous, their actual plain values are not immediately available. Note that _outputs themselves are not plain/primitive types_, and they cannot be converted into plain types. For example, you cannot turn an a variable of type Output<T> into a regular String or an Integer. An output can only be transformed into another output.
+Because outputs are asynchronous, their actual plain values are not immediately available. Note that _outputs themselves are not plain/primitive types_, and they cannot be converted into plain types. For example, you cannot turn a variable of type Output<T> into a regular String or an Integer. An output can only be transformed into another output.
 
 If you need to access and interact with an output’s plain value, you can do so using one of the following options: