Make the FastPairAdvHandler handleBroadcast logs more readable.

Before:
D FastPairService: On discovery model id583c73
After:
D FastPairService: On discovery model id 583c73

Test: Build and install Nearby module to check, atest NearbyUnitTests
BUG: 216079944
Change-Id: Ib9f6c9f67f55d09141e7dad47998e10c11d539c6
diff --git a/nearby/service/java/com/android/server/nearby/fastpair/FastPairAdvHandler.java b/nearby/service/java/com/android/server/nearby/fastpair/FastPairAdvHandler.java
index db2d69f..fd44e37 100644
--- a/nearby/service/java/com/android/server/nearby/fastpair/FastPairAdvHandler.java
+++ b/nearby/service/java/com/android/server/nearby/fastpair/FastPairAdvHandler.java
@@ -74,7 +74,7 @@
         if (FastPairDecoder.checkModelId(fastPairDevice.getData())) {
             byte[] model = FastPairDecoder.getModelId(fastPairDevice.getData());
             Log.d("FastPairService",
-                    "On discovery model id" + Hex.bytesToStringLowercase(model));
+                    "On discovery model id " + Hex.bytesToStringLowercase(model));
             // Use api to get anti spoofing key from model id.
             try {
                 Rpcs.GetObservedDeviceResponse response =