MetricMaker: Fix typo in Javadoc

Change-Id: I322b0b1ae39ace34012893d94f802af4bcd325b6
diff --git a/gerrit-server/src/main/java/com/google/gerrit/metrics/MetricMaker.java b/gerrit-server/src/main/java/com/google/gerrit/metrics/MetricMaker.java
index 2122594..32bfd2b 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/metrics/MetricMaker.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/metrics/MetricMaker.java
@@ -46,7 +46,7 @@
       String name, Description desc,
       Field<F1> field1, Field<F2> field2, Field<F3> field3);
 
-  /** Metric statistical distribution of values. */
+  /** Metric recording statistical distribution of values. */
   public abstract Histogram0 newHistogram(String name, Description desc);
   public abstract <F1> Histogram1<F1> newHistogram(
       String name, Description desc,