Add link to doc in template config

Author: yqzhishen

configs/templates/config_variance.yaml

@@ -21,8 +21,10 @@ binarization_args:
 
 use_spk_id: false
 num_spk: 1
-predict_dur: true
-predict_pitch: true
+# NOTICE: before enabling variance modules, please read the docs at
+# https://github.com/openvpi/DiffSinger/tree/main/docs/BestPractices.md#mutual-influence-between-variance-modules
+predict_dur: false
+predict_pitch: false
 # NOTICE: before enabling variance predictions, please read the docs at
 # https://github.com/openvpi/DiffSinger/tree/main/docs/BestPractices.md#choosing-variance-parameters
 predict_energy: false