Grammar police arrived

core/src/main/resources/hudson/model/LoadStatistics/main.properties

@@ -59,5 +59,5 @@ blurb=\
   <p><b>Note:</b>The number of busy executors and the number of available executors need not \
   necessarily be equal to the number of online executors as executors can be suspended from\
   accepting builds and thus be neither busy nor available.</p>\
-  <p>The graph is exponential moving average of periodically collected data values. \
-  3 timespans are updated every 10 seconds, 1 minute, and 1 hour respectively.</p>
+  <p>The graph is an exponential moving average of periodically collected data values. \
+  3 timespans are updated every 10 seconds, 1 minute and 1 hour respectively.</p>