[Docs] Model_doc structure/clarity improvements (#26876)

* first batch of structure improvements for model_docs

* second batch of structure improvements for model_docs

* more structure improvements for model_docs

* more structure improvements for model_docs

* structure improvements for cv model_docs

* more structural refactoring

* addressed feedback about image processors

docs/source/en/model_doc/ctrl.md

@@ -41,7 +41,10 @@ providing more explicit control over text generation. These codes also allow CTR
 training data are most likely given a sequence. This provides a potential method for analyzing large amounts of data
 via model-based source attribution.*
 
-Tips:
+This model was contributed by [keskarnitishr](https://huggingface.co/keskarnitishr). The original code can be found
+[here](https://github.com/salesforce/ctrl).
+
+## Usage tips
 
 - CTRL makes use of control codes to generate text: it requires generations to be started by certain words, sentences
   or links to generate coherent text. Refer to the [original implementation](https://github.com/salesforce/ctrl) for
@@ -56,10 +59,8 @@ Tips:
   pre-computed values in the context of text generation. See the [`forward`](model_doc/ctrl#transformers.CTRLModel.forward)
   method for more information on the usage of this argument.
 
-This model was contributed by [keskarnitishr](https://huggingface.co/keskarnitishr). The original code can be found
-[here](https://github.com/salesforce/ctrl).
 
-## Documentation resources
+## Resources
 
 - [Text classification task guide](../tasks/sequence_classification)
 - [Causal language modeling task guide](../tasks/language_modeling)
@@ -73,6 +74,9 @@ This model was contributed by [keskarnitishr](https://huggingface.co/keskarnitis
 [[autodoc]] CTRLTokenizer
     - save_vocabulary
 
+<frameworkcontent>
+<pt>
+
 ## CTRLModel
 
 [[autodoc]] CTRLModel
@@ -88,6 +92,9 @@ This model was contributed by [keskarnitishr](https://huggingface.co/keskarnitis
 [[autodoc]] CTRLForSequenceClassification
     - forward
 
+</pt>
+<tf>
+
 ## TFCTRLModel
 
 [[autodoc]] TFCTRLModel
@@ -102,3 +109,6 @@ This model was contributed by [keskarnitishr](https://huggingface.co/keskarnitis
 
 [[autodoc]] TFCTRLForSequenceClassification
     - call
+
+</tf>
+</frameworkcontent>