Fix spelling.

src/main/java/org/apache/commons/lang3/time/DateUtils.java

@@ -45,7 +45,7 @@ import org.apache.commons.lang3.Validate;
  * <p>
  * Several methods are provided for adding to {@code Date} objects, of the form
  * {@code addXXX(Date date, int amount)}. It is important to note these methods
- * use a {@code Calendar} internally (with default timezone and locale) and may
+ * use a {@code Calendar} internally (with default time zone and locale) and may
  * be affected by changes to daylight saving time (DST).
  * </p>
  *
@@ -686,7 +686,7 @@ public class DateUtils {
      * 28 Mar 2002 14:00:00.000. If this was passed with MONTH, it
      * would return 1 April 2002 0:00:00.000.</p>
      *
-     * <p>For a date in a timezone that handles the change to daylight
+     * <p>For a date in a time zone that handles the change to daylight
      * saving time, rounding to Calendar.HOUR_OF_DAY will behave as follows.
      * Suppose daylight saving time begins at 02:00 on March 30. Rounding a
      * date that crosses this time would produce the following values:
@@ -720,7 +720,7 @@ public class DateUtils {
      * 28 Mar 2002 14:00:00.000. If this was passed with MONTH, it
      * would return 1 April 2002 0:00:00.000.</p>
      *
-     * <p>For a date in a timezone that handles the change to daylight
+     * <p>For a date in a time zone that handles the change to daylight
      * saving time, rounding to Calendar.HOUR_OF_DAY will behave as follows.
      * Suppose daylight saving time begins at 02:00 on March 30. Rounding a
      * date that crosses this time would produce the following values:
@@ -760,7 +760,7 @@ public class DateUtils {
      * 28 Mar 2002 14:00:00.000. If this was passed with MONTH, it
      * would return 1 April 2002 0:00:00.000.</p>
      *
-     * <p>For a date in a timezone that handles the change to daylight
+     * <p>For a date in a time zone that handles the change to daylight
      * saving time, rounding to Calendar.HOUR_OF_DAY will behave as follows.
      * Suppose daylight saving time begins at 02:00 on March 30. Rounding a
      * date that crosses this time would produce the following values:

src/main/java/org/apache/commons/lang3/time/DurationFormatUtils.java

@@ -254,7 +254,7 @@ public class DurationFormatUtils {
     /**
      * <p>Formats the time gap as a string, using the specified format.
      * Padding the left hand side of numbers with zeroes is optional and
-     * the timezone may be specified. </p>
+     * the time zone may be specified. </p>
      *
      * <p>When calculating the difference between months/days, it chooses to
      * calculate months first. So when working out the number of months and
@@ -288,7 +288,7 @@ public class DurationFormatUtils {
 
         final Token[] tokens = lexx(format);
 
-        // timezones get funky around 0, so normalizing everything to GMT
+        // time zones get funky around 0, so normalizing everything to GMT
         // stops the hours being off
         final Calendar start = Calendar.getInstance(timezone);
         start.setTime(new Date(startMillis));

src/main/java/org/apache/commons/lang3/time/FastDateParser.java

@@ -808,7 +808,7 @@ public class FastDateParser implements DateParser, Serializable {
     };
 
     /**
-     * A strategy that handles a timezone field in the parsing pattern
+     * A strategy that handles a time zone field in the parsing pattern
      */
     static class TimeZoneStrategy extends PatternStrategy {
         private static final String RFC_822_TIME_ZONE = "[+-]\\d{4}";

src/main/java/org/apache/commons/lang3/time/FastDatePrinter.java

@@ -1528,8 +1528,8 @@ public class FastDatePrinter implements DatePrinter, Serializable {
          *
          * @param timeZone the time zone
          * @param daylight adjust the style for daylight saving time if {@code true}
-         * @param style the timezone style
-         * @param locale the timezone locale
+         * @param style the time zone style
+         * @param locale the time zone locale
          */
         TimeZoneDisplayKey(final TimeZone timeZone,
                            final boolean daylight, final int style, final Locale locale) {

src/main/java/org/apache/commons/lang3/time/FastTimeZone.java

@@ -70,7 +70,7 @@ public class FastTimeZone {
      * i.e. <em>[GMT] (+|-) Hours [[:] Minutes]</em>
      *
      * @param id A GMT custom id (or Olson id
-     * @return A timezone
+     * @return A time zone
      */
     public static TimeZone getTimeZone(final String id) {
         final TimeZone tz = getGmtTimeZone(id);

src/main/java/org/apache/commons/lang3/time/FormatCache.java

@@ -48,7 +48,7 @@ abstract class FormatCache<F extends Format> {
 
     /**
      * <p>Gets a formatter instance using the default pattern in the
-     * default timezone and locale.</p>
+     * default time zone and locale.</p>
      *
      * @return a date/time formatter
      */

src/main/java/org/apache/commons/lang3/time/GmtTimeZone.java

@@ -20,7 +20,7 @@ import java.util.Date;
 import java.util.TimeZone;
 
 /**
- * Custom timezone that contains offset from GMT.
+ * Custom time zone that contains offset from GMT.
  *
  * @since 3.7
  */