fix: avoid duplicate ovl-sysmodules download filename

Rename the temporary ovl-sysmodules download target to prevent duplicate name collisions during download and move.

Co-authored-by: Cursor <cursoragent@cursor.com>

include/sysmodules/sysmodules.ini

@@ -73,8 +73,8 @@ delete /config/ultrahand/downloads/nx-fancontrol.zip
 try:
 download https://api.github.com/repos/ppkantorski/ovl-sysmodules/releases?per_page=1 /config/ultrahand/downloads/ovl-sysmodules-api.json
 json_file /config/ultrahand/downloads/ovl-sysmodules-api.json
-download {json_file(0,assets,0,browser_download_url)} /config/ultrahand/downloads/ovl-sysmodules.ovl
-mv /config/ultrahand/downloads/ovl-sysmodules.ovl /switch/.overlays/
+download {json_file(0,assets,0,browser_download_url)} /config/ultrahand/downloads/ovlSysmodules.ovl
+mv /config/ultrahand/downloads/ovlSysmodules.ovl /switch/.overlays/
 delete /config/ultrahand/downloads/ovl-sysmodules-api.json
 
 [QuickNTP - 1.6.0+r5]