UploadMetricsHook: Fix spelling errors

Change-Id: I610ab3d73ce9d9c4e14fc2e8e269ceaeaa16e5c0
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/git/UploadPackMetricsHook.java b/gerrit-server/src/main/java/com/google/gerrit/server/git/UploadPackMetricsHook.java
index fd4e7d3..d4fcbcd 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/git/UploadPackMetricsHook.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/git/UploadPackMetricsHook.java
@@ -54,21 +54,21 @@
 
     counting = metricMaker.newTimer(
         "git/upload-pack/phase_counting",
-        new Description("Time spenting in the 'Counting...' phase")
+        new Description("Time spent in the 'Counting...' phase")
           .setCumulative()
           .setUnit(Units.MILLISECONDS),
         operation);
 
     compressing = metricMaker.newTimer(
         "git/upload-pack/phase_compressing",
-        new Description("Time spenting in the 'Compressing...' phase")
+        new Description("Time spent in the 'Compressing...' phase")
           .setCumulative()
           .setUnit(Units.MILLISECONDS),
         operation);
 
     writing = metricMaker.newTimer(
         "git/upload-pack/phase_writing",
-        new Description("Time spenting transferring bytes to client")
+        new Description("Time spent transferring bytes to client")
           .setCumulative()
           .setUnit(Units.MILLISECONDS),
         operation);