Self review fixes

Author: JonasKunz

libs/exponential-histogram/src/main/java/org/elasticsearch/exponentialhistogram/ExponentialHistogram.java

@@ -143,7 +143,8 @@ static ReleasableExponentialHistogram create(int maxBucketCount, ExponentialHist
      * Merges the provided exponential histograms to a new, single histogram with at most the given amount of buckets.
      *
      * @param maxBucketCount the maximum number of buckets the result histogram is allowed to have
-     * @param histograms teh histograms to merge
+     * @param breaker the circuit breaker to use to limit memory allocations
+     * @param histograms the histograms to merge
      * @return the merged histogram
      */
     static ReleasableExponentialHistogram merge(
@@ -163,7 +164,8 @@ static ReleasableExponentialHistogram merge(
      * Merges the provided exponential histograms to a new, single histogram with at most the given amount of buckets.
      *
      * @param maxBucketCount the maximum number of buckets the result histogram is allowed to have
-     * @param histograms teh histograms to merge
+     * @param breaker the circuit breaker to use to limit memory allocations
+     * @param histograms the histograms to merge
      * @return the merged histogram
      */
     static ReleasableExponentialHistogram merge(

libs/exponential-histogram/src/main/java/org/elasticsearch/exponentialhistogram/FixedCapacityExponentialHistogram.java

@@ -159,7 +159,7 @@ public ExponentialHistogram.Buckets positiveBuckets() {
     @Override
     public void close() {
         if (closed) {
-            assert false : "ExponentialHistogramMerger closed multiple times";
+            assert false : "FixedCapacityExponentialHistogram closed multiple times";
         } else {
             closed = true;
             circuitBreaker.adjustBreaker(-ramBytesUsed());