UT-2111 fix Show Convert UI tooltip

Author: vkovec

com.unity.formats.fbx/Editor/FbxExportSettings.cs

@@ -71,7 +71,7 @@ public override void OnInspectorGUI() {
             EditorGUILayout.LabelField("Export Options", EditorStyles.boldLabel);
             EditorGUI.indentLevel++;
             exportSettings.ShowConvertToPrefabDialog = EditorGUILayout.Toggle(
-                new GUIContent("Show Convert UI:", "Enable Convert dialog when converting to a Linked Prefab"),
+                new GUIContent("Show Convert UI:", "Enable Convert dialog when converting to an FBX Linked Prefab"),
                 exportSettings.ShowConvertToPrefabDialog
             );
             EditorGUILayout.Space();