fix: mismatch between file and headed

Author: RyanDavies19

source/MoorDyn.h

@@ -142,7 +142,7 @@ extern "C"
 	int DECLDIR GetPointForce(int l, double force[3]);
 	int DECLDIR GetNodePos(int LineNum, int NodeNum, double pos[3]);
 
-	void AllOutput(double, double);
+	void DECLDIR AllOutput(double, double);
 
 	/**
 	 * @}