Replaced a character encoded in isolatin-1 in Javadoc.

As per current discussions on the dev list, we should go to UTF-8
entirely. For now, I have just used plain old html entities until we
make sure everything can be generated properly from UTF-8.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/math/trunk@1410238 13f79535-47bb-0310-9956-ffa450edef68

src/main/java/org/apache/commons/math3/stat/correlation/StorelessBivariateCovariance.java

@@ -23,7 +23,7 @@ import org.apache.commons.math3.exception.util.LocalizedFormats;
  * Bivariate Covariance implementation that does not require input data to be
  * stored in memory.
  *
- * <p>This class is based on a paper written by Philippe Pébay:
+ * <p>This class is based on a paper written by Philippe P&eacute;bay:
  * <a href="http://prod.sandia.gov/techlib/access-control.cgi/2008/086212.pdf">
  * Formulas for Robust, One-Pass Parallel Computation of Covariances and
  * Arbitrary-Order Statistical Moments</a>, 2008, Technical Report SAND2008-6212,

src/main/java/org/apache/commons/math3/stat/correlation/StorelessCovariance.java

@@ -28,7 +28,7 @@ import org.apache.commons.math3.linear.RealMatrix;
  * constructor. Specific elements of the matrix are incrementally updated with
  * calls to incrementRow() or increment Covariance().
  *
- * <p>This class is based on a paper written by Philippe Pébay:
+ * <p>This class is based on a paper written by Philippe P&eacute;bay:
  * <a href="http://prod.sandia.gov/techlib/access-control.cgi/2008/086212.pdf">
  * Formulas for Robust, One-Pass Parallel Computation of Covariances and
  * Arbitrary-Order Statistical Moments</a>, 2008, Technical Report SAND2008-6212,