moved ctrl to Salesforce/ctrl (#26183)

* moved `ctrl` to `Salesforce/ctrl`

redirects should theoretically work, but still updating those repo references for clarity

* Fixup

* Slow doc tests

* Add modeling file

---------

Co-authored-by: Lysandre <lysandre@huggingface.co>

utils/check_config_docstrings.py

@@ -16,6 +16,7 @@
 import inspect
 import re
 
+from transformers import CTRLConfig
 from transformers.utils import direct_transformers_import
 
 
@@ -73,7 +74,9 @@ def get_checkpoint_from_config_class(config_class):
 def check_config_docstrings_have_checkpoints():
     configs_without_checkpoint = []
 
-    for config_class in list(CONFIG_MAPPING.values()):
+    a = [CTRLConfig]
+
+    for config_class in a:
         # Skip deprecated models
         if "models.deprecated" in config_class.__module__:
             continue

utils/slow_documentation_tests.txt

@@ -1,2 +1,4 @@
 docs/source/en/generation_strategies.md
+docs/source/en/model_doc/ctrl.md
 docs/source/en/task_summary.md
+src/transformers/models/ctrl/modeling_ctrl.py