Fix typo in functions-reference-node.md

Author: bnb

articles/azure-functions/functions-reference-node.md

@@ -461,7 +461,7 @@ There are two ways to install packages on your Function App:
 
 ## Environment variables
 
-In Functions, [app settings](functions-app-settings.md), such as service connection strings, are exposed as environment variables during execution. You can access these settings using `process.env`, as shown here in the second and thrid calls to `context.log()` where we log the `AzureWebJobsStorage` and `WEBSITE_SITE_NAME` environment variables:
+In Functions, [app settings](functions-app-settings.md), such as service connection strings, are exposed as environment variables during execution. You can access these settings using `process.env`, as shown here in the second and third calls to `context.log()` where we log the `AzureWebJobsStorage` and `WEBSITE_SITE_NAME` environment variables:
 
 ```javascript
 module.exports = async function (context, myTimer) {