obs-nvenc: Fix translation string for 4:4:4 unsupported error

(cherry picked from commit 7a04980213f1df084fd9b760ebec402e0f55c5a5)

plugins/obs-nvenc/nvenc.c

@@ -738,7 +738,7 @@ static bool init_encoder(struct nvenc_data *enc, enum codec_type codec, obs_data
 	enc->in_format = get_preferred_format(pref_format);
 
 	if (enc->in_format == VIDEO_FORMAT_I444 && !support_444) {
-		NV_FAIL(obs_module_text("NVENC.444Unsupported"));
+		NV_FAIL(obs_module_text("444Unsupported"));
 		return false;
 	}