Fix various Javadoc typos (closes #134)

src/main/java/org/apache/commons/lang3/Validate.java

@@ -1948,7 +1948,7 @@ public class Validate {
      * throwing an exception with the specified message. This method is useful when
      * validating according to an arbitrary class</p>
      *
-     * <pre>Validate.isInstanceOf(OkClass.classs, object, "Wrong class, object is of class %s",
+     * <pre>Validate.isInstanceOf(OkClass.class, object, "Wrong class, object is of class %s",
      *   object.getClass().getName());</pre>
      *
      * @param type  the class the object must be validated against, not null

src/main/java/org/apache/commons/lang3/builder/EqualsBuilder.java

@@ -104,7 +104,7 @@ public class EqualsBuilder implements Builder<Boolean> {
      * are equal, so we also need to ensure that the replacement objects are only equal
      * if the original objects are identical.
      *
-     * The original implementation (2.4 and before) used the System.indentityHashCode()
+     * The original implementation (2.4 and before) used the System.identityHashCode()
      * method - however this is not guaranteed to generate unique ids (e.g. LANG-459)
      *
      * We now use the IDKey helper class (adapted from org.apache.axis.utils.IDKey)

src/main/java/org/apache/commons/lang3/builder/HashCodeBuilder.java

@@ -107,7 +107,7 @@ public class HashCodeBuilder implements Builder<Integer> {
     private static final int DEFAULT_INITIAL_VALUE = 17;
     
     /**
-     * The default multipler value to use in reflection hash code building.
+     * The default multiplier value to use in reflection hash code building.
      */
     private static final int DEFAULT_MULTIPLIER_VALUE = 37;
     
@@ -130,7 +130,7 @@ public class HashCodeBuilder implements Builder<Integer> {
      * are equal, so we also need to ensure that the replacement objects are only equal
      * if the original objects are identical.
      *
-     * The original implementation (2.4 and before) used the System.indentityHashCode()
+     * The original implementation (2.4 and before) used the System.identityHashCode()
      * method - however this is not guaranteed to generate unique ids (e.g. LANG-459)
      *
      * We now use the IDKey helper class (adapted from org.apache.axis.utils.IDKey)

src/main/java/org/apache/commons/lang3/text/StrMatcher.java

@@ -226,7 +226,7 @@ public abstract class StrMatcher {
      * The API guarantees that <code>pos</code> is a valid index for <code>buffer</code>.
      * <p>
      * The character array may be larger than the active area to be matched.
-     * Only values in the buffer between the specifed indices may be accessed.
+     * Only values in the buffer between the specified indices may be accessed.
      * <p>
      * The matching code may check one character or many.
      * It may check characters preceding <code>pos</code> as well as those

src/main/java/org/apache/commons/lang3/text/StrSubstitutor.java

@@ -67,7 +67,7 @@ import org.apache.commons.lang3.StringUtils;
  * as in bash and other *nix shells, as those are arguably where the default ${} delimiter set originated.
  * The variable default value delimiter can be manually set by calling {@link #setValueDelimiterMatcher(StrMatcher)},
  * {@link #setValueDelimiter(char)} or {@link #setValueDelimiter(String)}.
- * The following shows an example with varialbe default value settings:
+ * The following shows an example with variable default value settings:
  * <pre>
  * Map valuesMap = HashMap();
  * valuesMap.put(&quot;animal&quot;, &quot;quick brown fox&quot;);

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

@@ -158,7 +158,7 @@ public class DurationFormatUtils {
     }
 
     /**
-     * <p>Formats an elapsed time into a plurialization correct string.</p>
+     * <p>Formats an elapsed time into a pluralization correct string.</p>
      * 
      * <p>This method formats durations using the days and lower fields of the
      * format pattern. Months and larger are not used.</p>
@@ -174,7 +174,7 @@ public class DurationFormatUtils {
         final boolean suppressLeadingZeroElements,
         final boolean suppressTrailingZeroElements) {
 
-        // This method is generally replacable by the format method, but 
+        // This method is generally replaceable by the format method, but
         // there are a series of tweaks and special cases that require 
         // trickery to replicate.
         String duration = formatDuration(durationMillis, "d' days 'H' hours 'm' minutes 's' seconds'");