small cleanup update Daniel

* include/libxml/xpath.h: small cleanup
* doc/xml.html: update
Daniel
diff --git a/include/libxml/xpath.h b/include/libxml/xpath.h
index 3755678..7a1ec75 100644
--- a/include/libxml/xpath.h
+++ b/include/libxml/xpath.h
@@ -130,11 +130,16 @@
     xmlXPathObjectPtr value;		/* the value */
 };
 
-/*
- * an evaluation function, the parameters are on the context stack
+/**
+ * xmlXPathEvalFunc:
+ * @ctxt: an XPath parser context
+ * @nargs: the number of arguments passed to the function
+ *
+ * an XPath evaluation function, the parameters are on thei XPath context stack
  */
 
-typedef void (*xmlXPathEvalFunc)(xmlXPathParserContextPtr ctxt, int nargs);
+typedef void (*xmlXPathEvalFunc)(xmlXPathParserContextPtr ctxt,
+	                         int nargs);
 
 /*
  * Extra function: a name and a evaluation function.