Doc Updates

Adding date and reference to ESAPIErrorJavaLevel class deprecation
annotation.

Author: jeremiahjstacey

src/main/java/org/owasp/esapi/logging/java/ESAPIErrorJavaLevel.java

@@ -19,7 +19,7 @@
 
 /**
  *  A custom logging level defined between Level.SEVERE and Level.WARNING in logger.
- *  @deprecated
+ *  @deprecated 10/24/2020 : References should use ESAPICustomJavaLevel.ERROR_LEVEL
  *  @see ESAPICustomJavaLevel#ERROR_LEVEL
  */
 public class ESAPIErrorJavaLevel extends Level {