chore: fix a broken doc-link in README

Author: jaeopt

README.md

@@ -17,7 +17,7 @@ Optimizely Rollouts is free feature flags for development teams. Easily roll out
 
 ### Using the SDK
 
-See the [Mobile developer documentation](https://docs.developers.optimizely.com/full-stack/docs/install-the-swift-sdk) to learn how to set
+See the [Mobile developer documentation](https://docs.developers.optimizely.com/full-stack/docs/install-sdk-swift) to learn how to set
 up an Optimizely X project and start using the SDK.
 
 ### Requirements