fix precommit

Signed-off-by: Nicholas Walter Knize <nknize@apache.org>

server/src/main/java/org/opensearch/cluster/routing/allocation/allocator/BalancedShardsAllocator.java

@@ -162,7 +162,7 @@ private void setWeightFunction(float indexBalance, float shardBalanceFactor) {
 
     /**
      * When primary shards balance is desired, enable primary shard balancing constraints
-     * @param preferPrimaryShardBalance
+     * @param preferPrimaryShardBalance boolean to prefer balancing by primary shard
      */
     private void setPreferPrimaryShardBalance(boolean preferPrimaryShardBalance) {
         this.preferPrimaryShardBalance = preferPrimaryShardBalance;