Adding documentation that the Mutable numbers don't work as might be expected with String.format. LANG-698

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/lang/trunk@1160571 13f79535-47bb-0310-9956-ffa450edef68

src/main/java/org/apache/commons/lang3/mutable/MutableBoolean.java

@@ -21,6 +21,8 @@
 
 /**
  * A mutable <code>boolean</code> wrapper.
+ * <p>
+ * Note that as MutableBoolean does not extend Boolean, it is not treated by String.format as a Boolean parameter. 
  * 
  * @see Boolean
  * @since 2.2

src/main/java/org/apache/commons/lang3/mutable/MutableByte.java

@@ -18,6 +18,8 @@
 
 /**
  * A mutable <code>byte</code> wrapper.
+ * <p>
+ * Note that as MutableByte does not extend Byte, it is not treated by String.format as a Byte parameter. 
  * 
  * @see Byte
  * @since 2.1

src/main/java/org/apache/commons/lang3/mutable/MutableDouble.java

@@ -18,6 +18,8 @@
 
 /**
  * A mutable <code>double</code> wrapper.
+ * <p>
+ * Note that as MutableDouble does not extend Double, it is not treated by String.format as a Double parameter. 
  * 
  * @see Double
  * @since 2.1

src/main/java/org/apache/commons/lang3/mutable/MutableFloat.java

@@ -18,6 +18,8 @@
 
 /**
  * A mutable <code>float</code> wrapper.
+ * <p>
+ * Note that as MutableFloat does not extend Float, it is not treated by String.format as a Float parameter. 
  * 
  * @see Float
  * @since 2.1

src/main/java/org/apache/commons/lang3/mutable/MutableInt.java

@@ -18,6 +18,8 @@
 
 /**
  * A mutable <code>int</code> wrapper.
+ * <p>
+ * Note that as MutableInt does not extend Integer, it is not treated by String.format as an Integer parameter. 
  * 
  * @see Integer
  * @since 2.1

src/main/java/org/apache/commons/lang3/mutable/MutableLong.java

@@ -18,6 +18,8 @@
 
 /**
  * A mutable <code>long</code> wrapper.
+ * <p>
+ * Note that as MutableLong does not extend Long, it is not treated by String.format as a Long parameter. 
  * 
  * @see Long
  * @since 2.1

src/main/java/org/apache/commons/lang3/mutable/MutableShort.java

@@ -18,6 +18,8 @@
 
 /**
  * A mutable <code>short</code> wrapper.
+ * <p>
+ * Note that as MutableShort does not extend Short, it is not treated by String.format as a Short parameter. 
  * 
  * @see Short
  * @since 2.1