Minor documentation fixes

docs/API.md

@@ -41,11 +41,11 @@ a user-friendly way.
 The API is exposed through the RapidAPI Hub which manages API subscriptions, API keys, payments and other things. Please 
 refer to the [RapidAPI Documentation](https://docs.rapidapi.com/docs/consumer-quick-start-guide) to get started.
 
-Generally, in order to use an API you need to perform the following steps:
+Generally, in order to use the API you need to perform the following steps:
 - Create a RapidAPI.com account.
 - [Navigate to the API page](https://rapidapi.com/texelmoda-texelmoda-apis/api/try-on-diffusion) and subscribe to a 
   suitable pricing plan. We also provide a free BASIC plan with 100 API requests per month.
-- Use the obtained RapidAPI key to authenticate (via the _X-RapidAPI-Key_ header) and use an API from any programming 
+- Use the obtained RapidAPI key to authenticate (via the _X-RapidAPI-Key_ header) and use the API from any programming 
   language or tool you like.
 
 Example API call using cURL: