fixing some comments to avoid warnings from apibuild.py Daniel

* SAX2.c hash.c parser.c include/libxml/xmlexports.h
  include/libxml/xmlmemory.h include/libxml/xmlversion.h.in:
  fixing some comments to avoid warnings from apibuild.py
Daniel
diff --git a/SAX2.c b/SAX2.c
index f305158..df1c67e 100644
--- a/SAX2.c
+++ b/SAX2.c
@@ -1877,7 +1877,7 @@
  * @nb_namespaces:  number of namespace definitions on that node
  * @namespaces:  pointer to the array of prefix/URI pairs namespace definitions
  * @nb_attributes:  the number of attributes on that node
- * nb_defaulted:  the number of defaulted attributes.
+ * @nb_defaulted:  the number of defaulted attributes.
  * @attributes:  pointer to the array of (localname/prefix/URI/value/end)
  *               attribute values.
  *