manual.texi Add a couple of missing change notes for

manual.texi	mysqldump -X bug fixes (3.23.50, 3.23.51)

Docs/manual.texi

@@ -50610,6 +50610,8 @@ Fixed @code{mysql_info()} to return 0 for the 'Duplicates' value for
 
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+Fix bug with closing tags missing slash for @code{mysqldump} XML output.
+@item
 Remove end space from @code{ENUM} values. (This fixed a problem with
 @code{SHOW CREATE TABLE}.)
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@@ -50660,6 +50662,8 @@ Linux-x86 binaries.
 
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+Add missing @code{<row>} tags for @code{mysqldump} XML output.
+@item
 Fixed problem with @code{crash-me} and @code{gcc} 3.0.4.
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 Fixed that @code{@@@@unknown_variable} doesn't hang server.