Update sample app for final GB MR API changes.

Change-Id: Ic6b7aa2ffe88f6a9228322d41a2be391eb5bf545
diff --git a/samples/ApiDemos/src/com/example/android/apis/nfc/TechFilter.java b/samples/ApiDemos/src/com/example/android/apis/nfc/TechFilter.java
index 4042a81..10784c2 100644
--- a/samples/ApiDemos/src/com/example/android/apis/nfc/TechFilter.java
+++ b/samples/ApiDemos/src/com/example/android/apis/nfc/TechFilter.java
@@ -37,7 +37,7 @@
 
         Intent intent = getIntent();
         String action = intent.getAction();
-        if (NfcAdapter.ACTION_TECHNOLOGY_DISCOVERED.equals(action)) {
+        if (NfcAdapter.ACTION_TECH_DISCOVERED.equals(action)) {
             mText.setText("Discovered tag " + ++mCount + " with intent: " + intent);
         } else {
             mText.setText("Scan a tag");