update docs

Author: af-margot

docs/API.md

@@ -9,6 +9,7 @@ The list of available methods for this plugin is described below.
     - [sendEvent](#sendEvent)
     - [setCustomerUserId](#setCustomerUserId)
     - [getConversionData](#getConversionData)
+    - [getAppsFlyerId](#getAppsFlyerId)
 -  [Android & iOS API](#androidiOSApi)
     - [stopSDK](#stopSDK)
     - [isSDKStopped](#isSDKStopped)
@@ -21,7 +22,6 @@ The list of available methods for this plugin is described below.
     - [setCurrencyCode](#setCurrencyCode)
     - [recordLocation](#recordLocation)
     - [anonymizeUser](#anonymizeUser)
-    - [getAppsFlyerId](#getAppsFlyerId)
     - [setMinTimeBetweenSessions](#setMinTimeBetweenSessions)
     - [setHost](#setHost)
     - [setUserEmails](#setUserEmails)