Correct documentation of callback arguments

Both `$.fn.before` and `$.fn.after` invoke the supplied function with
two arguments: the numeric index of each element in the set and the
string markup describing each element's contents. The type of these
arguments is correctly documented, but the description of the second
argument is omitted. Include this information based on the documentation
for similar behavior in `$.fn.append`.

Author: jugglinmike

entries/after.xml

@@ -21,7 +21,7 @@
   <signature>
     <added>1.4</added>
     <argument name="function" type="Function">
-      <desc>A function that returns an HTML string, DOM element(s), or jQuery object to insert after each element in the set of matched elements. Receives the index position of the element in the set as an argument. Within the function, <code>this</code> refers to the current element in the set.</desc>
+      <desc>A function that returns an HTML string, DOM element(s), or jQuery object to insert after each element in the set of matched elements. Receives the index position of the element in the set and the old HTML value of the element as arguments. Within the function, <code>this</code> refers to the current element in the set.</desc>
       <argument name="index" type="Integer" />
       <argument name="html" type="String" />
       <return>

entries/before.xml

@@ -28,7 +28,7 @@
         <type name="Element"/>
         <type name="jQuery"/>        
       </return>      
-      <desc>A function that returns an HTML string, DOM element(s), or jQuery object to insert before each element in the set of matched elements. Receives the index position of the element in the set as an argument. Within the function, <code>this</code> refers to the current element in the set.
+      <desc>A function that returns an HTML string, DOM element(s), or jQuery object to insert before each element in the set of matched elements. Receives the index position of the element in the set and the old HTML value of the element as arguments. Within the function, <code>this</code> refers to the current element in the set.
       </desc>
     </argument>
   </signature>