update PR number

Author: troosan

CHANGELOG.md

@@ -10,7 +10,7 @@ v0.16.0 (xx xxx 2018)
 ### Fixed
 - Fix regex in `cloneBlock` function @nicoder #1269
 - HTML Title Writer loses text when Title contains a TextRun instead a string. @begnini #1436
-- 240 twips are being added to line spacing, should not happen when using lineRule fixed @troosan #1508 #1505
+- 240 twips are being added to line spacing, should not happen when using lineRule fixed @troosan #1509 #1505
 
 v0.15.0 (14 Jul 2018)
 ----------------------