obs-filters: Clarify that HDR Tone Mapping filter is optional

plugins/obs-filters/data/locale/en-US.ini

@@ -46,6 +46,7 @@ Crop.Bottom="Bottom"
 Crop.Width="Width"
 Crop.Height="Height"
 Crop.Relative="Relative"
+HdrTonemap.Description="OBS can perform HDR to SDR tone mapping automatically. Only use this filter if you need additional control for a particular source.\nThis filter has no effect on SDR sources."
 HdrTonemap.ToneTransform="Tone Transform"
 HdrTonemap.SdrReinhard="SDR: Reinhard"
 HdrTonemap.HdrMaxrgb="HDR: maxRGB"

plugins/obs-filters/hdr-tonemap-filter.c

@@ -102,9 +102,13 @@ static obs_properties_t *hdr_tonemap_filter_properties(void *data)
 {
 	obs_properties_t *props = obs_properties_create();
 
-	obs_property_t *p = obs_properties_add_list(
-		props, "transform", obs_module_text("HdrTonemap.ToneTransform"),
-		OBS_COMBO_TYPE_LIST, OBS_COMBO_FORMAT_INT);
+	obs_property_t *p = obs_properties_add_text(
+		props, "override_info",
+		obs_module_text("HdrTonemap.Description"), OBS_TEXT_INFO);
+
+	p = obs_properties_add_list(props, "transform",
+				    obs_module_text("HdrTonemap.ToneTransform"),
+				    OBS_COMBO_TYPE_LIST, OBS_COMBO_FORMAT_INT);
 	obs_property_list_add_int(p, obs_module_text("HdrTonemap.SdrReinhard"),
 				  TRANSFORM_SDR_REINHARD);
 	obs_property_list_add_int(p, obs_module_text("HdrTonemap.HdrMaxrgb"),