Fixing typos in a couple of method descriptions. (#1770)

java/libphonenumber/src/com/google/i18n/phonenumbers/PhoneNumberUtil.java

@@ -1803,7 +1803,7 @@ public class PhoneNumberUtil {
   }
 
   /**
-   * Gets the national significant number of the a phone number. Note a national significant number
+   * Gets the national significant number of a phone number. Note a national significant number
    * doesn't contain a national prefix or any formatting.
    *
    * @param number  the phone number for which the national significant number is needed

javascript/i18n/phonenumbers/phonenumberutil.js

@@ -2437,7 +2437,7 @@ i18n.phonenumbers.PhoneNumberUtil.prototype.
 
 
 /**
- * Gets the national significant number of the a phone number. Note a national
+ * Gets the national significant number of a phone number. Note a national
  * significant number doesn't contain a national prefix or any formatting.
  *
  * @param {i18n.phonenumbers.PhoneNumber} number the phone number for which the