Fix carrier config string typo.

Bug: 148611362
Test: build
Change-Id: Idf0c82a9920c62ecdc595973565656ed9ceedff6
diff --git a/telephony/java/android/telephony/CarrierConfigManager.java b/telephony/java/android/telephony/CarrierConfigManager.java
index 81042f4..717adb9 100644
--- a/telephony/java/android/telephony/CarrierConfigManager.java
+++ b/telephony/java/android/telephony/CarrierConfigManager.java
@@ -3167,7 +3167,7 @@
      * @hide
      */
     public static final String KEY_DATA_SWITCH_VALIDATION_MIN_GAP_LONG =
-            "data_switch_validation_min_gap_LONG";
+            "data_switch_validation_min_gap_long";
 
     /**
     * A boolean property indicating whether this subscription should be managed as an opportunistic