Update src/connections/sources/catalog/libraries/mobile/ios/middleware.md

Co-authored-by: Niall Brennan <[email protected]>

Author: joeynmq

src/connections/sources/catalog/libraries/mobile/ios/middleware.md

@@ -8,7 +8,7 @@ Middlewares are simple functions invoked by the Segment libraries, which give yo
 You can access the middleware API in both Objective-C and Swift.
 
 > info ""
-> **Note**: Destination middleware is **not** available for iOS.
+> **Note**: Destination Middlewares are **not** available for iOS.
 
 ### Use