Fixed typo

glm/detail/func_common.inl

@@ -259,7 +259,7 @@ namespace detail
 	{
 		GLM_FUNC_QUALIFIER static vec<L, T, Q> call(vec<L, T, Q> const& edge0, vec<L, T, Q> const& edge1, vec<L, T, Q> const& x)
 		{
-			GLM_STATIC_ASSERT(std::numeric_limits<T>::is_iec559 || GLM_CONFIG_UNRESTRICTED_GENTYPE, "'step' only accept floating-point inputs");
+			GLM_STATIC_ASSERT(std::numeric_limits<T>::is_iec559 || GLM_CONFIG_UNRESTRICTED_GENTYPE, "'smoothstep' only accept floating-point inputs");
 			vec<L, T, Q> const tmp(clamp((x - edge0) / (edge1 - edge0), static_cast<T>(0), static_cast<T>(1)));
 			return tmp * tmp * (static_cast<T>(3) - static_cast<T>(2) * tmp);
 		}