OPEN-149: fix documentation of LLColor4 constructor for F32 vector

doc/contributions.txt

@@ -688,6 +688,7 @@ Kagehi Kohn
 Kaimen Takahe
 Katharine Berry
 	STORM-1900
+    OPEN-149
 Keklily Longfall
 Ken Lavender
 Ken March

indra/llmath/v4color.h

@@ -50,7 +50,7 @@ class LLColor4
 		LLColor4(F32 r, F32 g, F32 b);		// Initializes LLColor4 to (r, g, b, 1)
 		LLColor4(F32 r, F32 g, F32 b, F32 a);		// Initializes LLColor4 to (r. g, b, a)
 		LLColor4(U32 clr);							// Initializes LLColor4 to (r=clr>>24, etc))
-		LLColor4(const F32 *vec);			// Initializes LLColor4 to (vec[0]. vec[1], vec[2], 1)
+		LLColor4(const F32 *vec);			// Initializes LLColor4 to (vec[0]. vec[1], vec[2], vec[3])
 		LLColor4(const LLColor3 &vec, F32 a = 1.f);	// Initializes LLColor4 to (vec, a)
 		explicit LLColor4(const LLSD& sd);
 		explicit LLColor4(const LLColor4U& color4u);  // "explicit" to avoid automatic conversion