Follow-up to r37627, fix doxygen tag.

* subversion/include/svn_mergeinfo.h
  (svn_mergeinfo_intersect2): New since 1.7, not 1.5.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@877703 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/subversion/include/svn_mergeinfo.h b/subversion/include/svn_mergeinfo.h
index 346695f..b56dead 100644
--- a/subversion/include/svn_mergeinfo.h
+++ b/subversion/include/svn_mergeinfo.h
@@ -304,7 +304,7 @@
  * of the two mergeinfo's ranges when calculating the range equivalence,
  * as described for svn_mergeinfo_diff().
  *
- * @since New in 1.5.
+ * @since New in 1.7.
  */
 svn_error_t *
 svn_mergeinfo_intersect2(svn_mergeinfo_t *mergeinfo,