Update NETWORK_TYPE_NR docs

Clarify that NR is for NR NSA and LTE is for NR SA

Test: build
Fix: 165204098
Change-Id: I48259a0dce53b7a6a02c5e211b0ef7fc3d2aea30
Merged-In: I48259a0dce53b7a6a02c5e211b0ef7fc3d2aea30
diff --git a/telephony/java/android/telephony/TelephonyManager.java b/telephony/java/android/telephony/TelephonyManager.java
index fc20f8a..eb79768 100644
--- a/telephony/java/android/telephony/TelephonyManager.java
+++ b/telephony/java/android/telephony/TelephonyManager.java
@@ -2800,7 +2800,11 @@
     /** Current network is LTE_CA {@hide} */
     @UnsupportedAppUsage
     public static final int NETWORK_TYPE_LTE_CA = TelephonyProtoEnums.NETWORK_TYPE_LTE_CA; // = 19.
-    /** Current network is NR(New Radio) 5G. */
+    /**
+     * Current network is NR (New Radio) 5G.
+     * This will only be returned for 5G SA.
+     * For 5G NSA, the network type will be {@link #NETWORK_TYPE_LTE}.
+     */
     public static final int NETWORK_TYPE_NR = TelephonyProtoEnums.NETWORK_TYPE_NR; // 20.
 
     private static final @NetworkType int[] NETWORK_TYPES = {