Fixing ASP.NET Typo (#427)

docs/best-practices/cdn.md

@@ -87,7 +87,7 @@ If you deliver static assets such as font files by using the CDN, you might enco
 
 * Configure the CDN to add CORS headers to the responses. For more information, see [Using Azure CDN with CORS](/azure/cdn/cdn-cors). 
 * If the origin is Azure blob storage, add CORS rules to the storage endpoint. For more information, see [Cross-Origin Resource Sharing (CORS) Support for the Azure Storage Services](http://msdn.microsoft.com/library/azure/dn535601.aspx).
-* Configure the application to set the CORS headers. For example, see [Enabling Cross-Origin Requests (CORS)](/aspnet/core/security/cors) in the ASp.NET Core documentation.
+* Configure the application to set the CORS headers. For example, see [Enabling Cross-Origin Requests (CORS)](/aspnet/core/security/cors) in the ASP.NET Core documentation.
 
 ### CDN fallback
 Consider how your application will cope with a failure or temporary unavailability of the CDN. Client applications may be able to use copies of the resources that were cached locally (on the client) during previous requests, or you can include code that detects failure and instead requests resources from the origin (the application folder or Azure blob container that holds the resources) if the CDN is unavailable.