chore(readme): update readme

Author: vectrixdevelops

collections-fastutil/readme.md

@@ -15,7 +15,7 @@
 
 Provides concurrent thread-safe collections for highly concurrent scenarios with `fastutil` in Java 17+.
 
-* **X2ObjectSyncMap**: A high-performance implementation of `X2ObjectMap`'s with `fastutil`.
+* **X2ObjectBucketSyncMap**: A high-performance implementation of `X2ObjectMap`'s with `fastutil`.
 
   * Fully compatible with the `fastutil` X2Object collections.
   * Delivers up to **40× higher read and write throughput** than `X2ObjectMaps#synchronize()` under heavy contention.

collections/readme.md

@@ -15,7 +15,7 @@
 
 Provides concurrent thread-safe collections for highly concurrent scenarios in Java 17+.
 
-* **SyncMap**: A high-performance implementation of `ConcurrentMap`.
+* **BucketSyncMap**: A high-performance implementation of `ConcurrentMap`.
 
   * Fully compatible with the Java Collections Framework (`ConcurrentMap`).
   * Delivers up to **2× higher update throughput** than `ConcurrentHashMap` under heavy contention, while matching its performance for reads and other operations.