fix: update label for FCM ApiKey to Server Key to match firebase console (#5165)

Author: pavellazar

src/fragments/sdk/push-notifications/android/getting-started.mdx

@@ -22,7 +22,7 @@ You can also create Amazon Pinpoint campaigns that tie user behavior to push or
         > FCM
         ```
 
-    - Provide your ApiKey. The FCM console refers to this value as `ServerKey`. For information on getting an FCM ApiKey, see the section [Setting Up FCM/GCM Guide](/sdk/push-notifications/setup-push-service). Use the steps in the next section to connect your app to your backend.
+    - Provide your `Server Key`. For information on getting an FCM `Server Key`, see the section [Setting Up FCM/GCM Guide](/sdk/push-notifications/setup-push-service). Use the steps in the next section to connect your app to your backend.
 
 ## Connect to Your Backend
 

src/fragments/sdk/push-notifications/android/setup-fcm.mdx

@@ -8,7 +8,7 @@ You can enable your Android app to receive push notifications that you send thro
 
 1. In the Firebase console, choose *Download google-services.json*. Copy the downloaded `google-services.json` file to the `app` directory of your Android project.
 
-To access the `ServerKey` (referred to as the ApiKey in the CLI setup):
+To access the `Server Key`:
 1. Open the [Firebase console](https://console.firebase.google.com/).
 
 1. Choose your project.