Fix spelling error in a comment

Change-Id: Ie3429019ab5ce58870db20af8bb52e7ab7e2766f
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder.js b/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder.js
index 6844416..c524f7f 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder.js
+++ b/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder.js
@@ -163,8 +163,8 @@
   };
 
   /**
-   * Re-renders the DIV.contentText alement for the given side and range of diff
-   * content.
+   * Re-renders the DIV.contentText elements for the given side and range of
+   * diff content.
    */
   GrDiffBuilder.prototype._renderContentByRange = function(start, end, side) {
     var lines = [];