correcting typo in ND

git-svn-id: http://svn.openlayers.org/trunk/openlayers@3805 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/BaseTypes.js

@@ -130,7 +130,7 @@ String.prototype.camelize = function() {
  * 
  * Return:
  * {Integer} The number, rounded to the specified number of significant digits.
- *           If null, 0, or negaive value passed in, returns 0
+ *           If null, 0, or negative value passed in, returns 0
  */
 Number.prototype.limitSigDigs = function(sig) {
     var number = (sig > 0) ? this.toString() : 0;