update config files with separate dropout for Tok2Vec layer

examples/experiments/onto-joint/defaults.cfg

@@ -114,3 +114,4 @@ window_size = 1
 embed_size = 10000
 maxout_pieces = 3
 subword_features = true
+dropout = null

examples/experiments/ptb-joint-pos-dep/bilstm_tok2vec.cfg

@@ -66,3 +66,4 @@ depth = 4
 embed_size = 2000
 subword_features = true
 maxout_pieces = 3
+dropout = null

examples/experiments/ptb-joint-pos-dep/defaults.cfg

@@ -67,3 +67,4 @@ window_size = 1
 embed_size = 2000
 maxout_pieces = 3
 subword_features = true
+dropout = null

examples/experiments/tok2vec-ner/charembed_tok2vec.cfg

@@ -37,6 +37,7 @@ nM = 64
 nC = 8
 rows = 2000
 columns = ["ID", "NORM", "PREFIX", "SUFFIX", "SHAPE", "ORTH"]
+dropout = null
 
 [nlp.pipeline.tok2vec.model.extract.features]
 @architectures = "spacy.Doc2Feats.v1"

examples/experiments/tok2vec-ner/multihashembed_tok2vec.cfg

@@ -45,3 +45,4 @@ maxout_pieces = 3
 window_size = 1
 subword_features = true
 pretrained_vectors = null
+dropout = null