Adding periods to the description texts

modules/globebrowsing/src/layergroup.cpp

@@ -40,8 +40,7 @@ namespace {
         "Blend between levels",
         "If this value is enabled, images between different levels are interpolated, "
         "rather than switching between levels abruptly. This makes transitions smoother "
-        "and more visually pleasing",
-        // @VISIBILITY(2.75)
+        "and more visually pleasing.",
         openspace::properties::Property::Visibility::User
     };
 } // namespace