Fix CVar macro syntax error in Vars.h

Fixed the CrosshairBacktrack CVar declaration - removed invalid 4th parameter.
The CVar macro only takes: name, display name, and default value (plus optional flags).

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Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: coffeegrind123

Amalgam/src/SDK/Vars.h

@@ -442,7 +442,7 @@ namespace Vars
 		CVar(Interp, "Fake interp", 0, SLIDER_CLAMP | SLIDER_PRECISION, 0, 1000, 5);
 		CVar(Window, VA_LIST("Window", "Backtrack window"), 185, SLIDER_CLAMP | SLIDER_PRECISION, 0, 200, 5);
 		CVar(PreferOnShot, "Prefer on shot", false);
-		CVar(CrosshairBacktrack, "Crosshair backtrack", false, "Adjust tick when manually aiming");
+		CVar(CrosshairBacktrack, "Crosshair backtrack", false);
 
 		CVar(Offset, "Offset", 0, NOSAVE | DEBUGVAR, -1, 1);
 	NAMESPACE_END(Backtrack);