fix typo
This has already been corrected in the official API reference docs
@@ -319,7 +319,7 @@ typedef void(XMLCALL *XML_StartDoctypeDeclHandler)(void *userData,
const XML_Char *pubid,
int has_internal_subset);
-/* This is called for the start of the DOCTYPE declaration when the
+/* This is called for the end of the DOCTYPE declaration when the
closing > is encountered, but after processing any external
subset.
*/
