move canonical checkpoints to their new location to keep this Space in "linked Spaces" (#1)

- move canonical checkpoints to their new location to keep this Space in "linked Spaces" (0db8483449542d22203aab2581ca490e514ad112)

backend/GPUHandler.py

@@ -17,7 +17,7 @@ model_metadata = {
         "tokenizer": OpenAIGPTTokenizer,
         "model": OpenAIGPTLMHeadModel,
         "size": 550,
-        "checkpoint": "openai-gpt",
+        "checkpoint": "openai-community/openai-gpt",
         "identifier": "gpt"
     }, "xlnet": {
         "tokenizer": XLNetTokenizer,
@@ -35,13 +35,13 @@ model_metadata = {
         "tokenizer": GPT2Tokenizer,
         "model": GPT2LMHeadModel,
         "size": 1500,
-        "checkpoint": "gpt2-medium",
+        "checkpoint": "openai-community/gpt2-medium",
         "identifier": "gpt2/medium"
     }, "gpt2/large": {
         "tokenizer": GPT2Tokenizer,
         "model": GPT2LMHeadModel,
         "size": 3300,
-        "checkpoint": "gpt2-large",
+        "checkpoint": "openai-community/gpt2-large",
         "identifier": "gpt2/large"
     }, "distilgpt2/small": {
         "tokenizer": GPT2Tokenizer,
@@ -53,25 +53,25 @@ model_metadata = {
         "tokenizer": CTRLTokenizer,
         "model": CTRLLMHeadModel,
         "size": 6300,
-        "checkpoint": "ctrl",
+        "checkpoint": "Salesforce/ctrl",
         "identifier": "ctrl"
     }, "pplm": {
         "tokenizer": GPT2Tokenizer,
         "model": GPT2LMHeadModel,
         "size": 3000,
-        "checkpoint": "gpt2-large",
+        "checkpoint": "openai-community/gpt2-large",
         "identifier": "pplm"
     }, "gpt2/xl": {
         "tokenizer": GPT2Tokenizer,
         "model": GPT2LMHeadModel,
         "size": 7000,
-        "checkpoint": "gpt2-xl",
+        "checkpoint": "openai-community/gpt2-xl",
         "identifier": "gpt2/xl"
     }, "pplm": {
         "tokenizer": GPT2Tokenizer,
         "model": GPT2LMHeadModel,
         "size": 4000,
-        "checkpoint": "gpt2-medium",
+        "checkpoint": "openai-community/gpt2-medium",
         "identifier": "pplm",
         "configuration_options": {
             "config": GPT2Config,