Fix wrong string constant that lead service_actions.txt to be empty

This change fixes an error in enum value name for SERVICE_ACTION as defined
in SdkConstantType.

Change-Id: I8c592c3bbb205f5d2eaf594897ca2b36fb1eeba9
diff --git a/src/com/google/doclava/Doclava.java b/src/com/google/doclava/Doclava.java
index 8ad3904..1b81ca1 100644
--- a/src/com/google/doclava/Doclava.java
+++ b/src/com/google/doclava/Doclava.java
@@ -44,7 +44,7 @@
   private static final String SDK_CONSTANT_TYPE_BROADCAST_ACTION =
       "android.annotation.SdkConstant.SdkConstantType.BROADCAST_INTENT_ACTION";
   private static final String SDK_CONSTANT_TYPE_SERVICE_ACTION =
-      "android.annotation.SdkConstant.SdkConstantType.SERVICE_INTENT_ACTION";
+      "android.annotation.SdkConstant.SdkConstantType.SERVICE_ACTION";
   private static final String SDK_CONSTANT_TYPE_CATEGORY =
       "android.annotation.SdkConstant.SdkConstantType.INTENT_CATEGORY";
   private static final String SDK_CONSTANT_TYPE_FEATURE =