config: avoid "write_in_full(fd, buf, len) < len" pattern

diff --git a/RelNotes b/RelNotes
index a6103a01d82cdaf8081e14cd359b42b0e5098544..29ef98331028ae5b1cdc10be75626e48b173a961 120000 (symlink)
--- a/RelNotes
+++ b/RelNotes
@@ -1 +1 @@
-Documentation/RelNotes/1.7.3.4.txt
\ No newline at end of file
+Documentation/RelNotes/2.14.2.txt
\ No newline at end of file