Fix documented errors for gamma ramp functions
Fixes #2186
diff --git a/include/GLFW/glfw3.h b/include/GLFW/glfw3.h
index 2687546..9ca3036 100644
--- a/include/GLFW/glfw3.h
+++ b/include/GLFW/glfw3.h
@@ -2835,11 +2835,11 @@
* @param[in] monitor The monitor whose gamma ramp to set.
* @param[in] gamma The desired exponent.
*
- * @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref
- * GLFW_INVALID_VALUE and @ref GLFW_PLATFORM_ERROR.
+ * @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref GLFW_INVALID_VALUE,
+ * @ref GLFW_PLATFORM_ERROR and @ref GLFW_FEATURE_UNAVAILABLE (see remarks).
*
* @remark @wayland Gamma handling is a privileged protocol, this function
- * will thus never be implemented and emits @ref GLFW_PLATFORM_ERROR.
+ * will thus never be implemented and emits @ref GLFW_FEATURE_UNAVAILABLE.
*
* @thread_safety This function must only be called from the main thread.
*
@@ -2859,11 +2859,11 @@
* @return The current gamma ramp, or `NULL` if an
* [error](@ref error_handling) occurred.
*
- * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
- * GLFW_PLATFORM_ERROR.
+ * @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref GLFW_PLATFORM_ERROR
+ * and @ref GLFW_FEATURE_UNAVAILABLE (see remarks).
*
* @remark @wayland Gamma handling is a privileged protocol, this function
- * will thus never be implemented and emits @ref GLFW_PLATFORM_ERROR while
+ * will thus never be implemented and emits @ref GLFW_FEATURE_UNAVAILABLE while
* returning `NULL`.
*
* @pointer_lifetime The returned structure and its arrays are allocated and
@@ -2898,8 +2898,8 @@
* @param[in] monitor The monitor whose gamma ramp to set.
* @param[in] ramp The gamma ramp to use.
*
- * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref
- * GLFW_PLATFORM_ERROR.
+ * @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref GLFW_PLATFORM_ERROR
+ * and @ref GLFW_FEATURE_UNAVAILABLE (see remarks).
*
* @remark The size of the specified gamma ramp should match the size of the
* current ramp for that monitor.
@@ -2907,7 +2907,7 @@
* @remark @win32 The gamma ramp size must be 256.
*
* @remark @wayland Gamma handling is a privileged protocol, this function
- * will thus never be implemented and emits @ref GLFW_PLATFORM_ERROR.
+ * will thus never be implemented and emits @ref GLFW_FEATURE_UNAVAILABLE.
*
* @pointer_lifetime The specified gamma ramp is copied before this function
* returns.
