Make the FastPairAdvHandler handleBroadcast logs more readable.

Before:
D FastPairService: account list size1
After:
D FastPairService: account list size 1

Test: Build and install Nearby module to check, atest NearbyUnitTests
BUG: 216079944
Change-Id: Idcfb5e801d49f7cada0678650ede7d3df8c9121c
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 6a296c2..a30ad6f 100644
--- a/nearby/service/java/com/android/server/nearby/fastpair/FastPairAdvHandler.java
+++ b/nearby/service/java/com/android/server/nearby/fastpair/FastPairAdvHandler.java
@@ -89,7 +89,7 @@
         } else {
             // Start to process bloom filter
             try {
-                Log.d(TAG, "account list size" + accountList.size());
+                Log.d(TAG, "account list size " + accountList.size());
                 byte[] bloomFilterByteArray = FastPairDecoder
                         .getBloomFilter(fastPairDevice.getData());
                 byte[] bloomFilterSalt = FastPairDecoder