Update Writerside config to use rw.tree version 1.0.3

Upgraded the `rw.tree` instance version from 1.0.2 to 1.0.3 in the configuration file. This ensures compatibility with the latest features and fixes.

Author: Gamer-VII

Writerside/writerside.cfg

@@ -4,5 +4,5 @@
 <ihp version="2.0">
     <topics dir="topics" web-path="topics"/>
     <images dir="images" web-path="images"/>
-    <instance src="rw.tree" version="1.0.2"/>
+    <instance src="rw.tree" version="1.0.3"/>
 </ihp>