[textanalytics] custom model docstrings edits (Azure#21498)

* update model docstrings

* fix

sdk/textanalytics/azure-ai-textanalytics/azure/ai/textanalytics/_models.py

@@ -2270,8 +2270,8 @@ def _from_generated(cls, sentence):
 
 class RecognizeCustomEntitiesAction(DictMixin):
     """RecognizeCustomEntitiesAction encapsulates the parameters for starting a long-running custom entity
-     recognition operation. To train a model to recognize your custom entities, see
-     https://aka.ms/azsdk/textanalytics/customentityrecognition
+    recognition operation. For information on regional support of custom features and how to train a model to
+    recognize custom entities, see https://aka.ms/azsdk/textanalytics/customentityrecognition
 
     :param str project_name: Required. This field indicates the project name for the model.
     :param str deployment_name: This field indicates the deployment name for the model.
@@ -2394,8 +2394,8 @@ def _from_generated(cls, result):
 
 class MultiCategoryClassifyAction(DictMixin):
     """MultiCategoryClassifyAction encapsulates the parameters for starting a long-running custom multi category
-    classification operation. To train a model to classify your documents, see
-    https://aka.ms/azsdk/textanalytics/customfunctionalities
+    classification operation. For information on regional support of custom features and how to train a model to
+    classify your documents, see https://aka.ms/azsdk/textanalytics/customfunctionalities
 
     :param str project_name: Required. This field indicates the project name for the model.
     :param str deployment_name: Required. This field indicates the deployment name for the model.
@@ -2508,8 +2508,8 @@ def _from_generated(cls, result):
 
 class SingleCategoryClassifyAction(DictMixin):
     """SingleCategoryClassifyAction encapsulates the parameters for starting a long-running custom single category
-    classification operation. To train a model to classify your documents, see
-    https://aka.ms/azsdk/textanalytics/customfunctionalities
+    classification operation. For information on regional support of custom features and how to train a model to
+    classify your documents, see https://aka.ms/azsdk/textanalytics/customfunctionalities
 
     :param str project_name: Required. This field indicates the project name for the model.
     :param str deployment_name: Required. This field indicates the deployment name for the model.
@@ -2621,7 +2621,7 @@ def _from_generated(cls, result):
 class ClassificationCategory(DictMixin):
     """ClassificationCategory represents a classification of the input document.
 
-    :ivar str category: Classification type.
+    :ivar str category: Custom classification category for the document.
     :ivar float confidence_score: Confidence score between 0 and 1 of the recognized classification.
     """