Added .asl extension

The .asl extension was forgotten when creating the original autosplitter file. This change adds that .asl extension for the sake of consistency.

Author: SabulineHorizon

LiveSplit.AutoSplitters.xml

@@ -23001,7 +23001,7 @@
             <Game>Squirrel with a Gun</Game>
         </Games>
         <URLs>
-            <URL>https://raw.githubusercontent.com/SabulineHorizon/Autosplitters/main/SquirrelWithAGun</URL>
+            <URL>https://raw.githubusercontent.com/SabulineHorizon/Autosplitters/main/SquirrelWithAGun.asl</URL>
         </URLs>
         <Type>Script</Type>
         <Description>Auto start/split/reset (By SabulineHorizon)</Description>