[Docs] Fix spelling and grammar mistakes (#28825)

* Fix typos and grammar mistakes in docs and examples

* Fix typos in docstrings and comments

* Fix spelling of `tokenizer` in model tests

* Remove erroneous spaces in decorators

* Remove extra spaces in Markdown link texts

docs/source/ja/add_new_model.md

@@ -430,7 +430,7 @@ def _init_weights(self, module):
 ```py
 def _init_weights(self, module):
     """Initialize the weights"""
-    if isinstnace(module, Wav2Vec2ForPreTraining):
+    if isinstance(module, Wav2Vec2ForPreTraining):
         module.project_hid.reset_parameters()
         module.project_q.reset_parameters()
         module.project_hid._is_hf_initialized = True

docs/source/ja/main_classes/deepspeed.md

@@ -2135,7 +2135,7 @@ train_batch_size = 1 * world_size
 # - if using `offload_param` you can manually finetune stage3_param_persistence_threshold to control
 # - which params should remain on gpus - the larger the value the smaller the offload size
 #
-# For indepth info on Deepspeed config see
+# For in-depth info on Deepspeed config see
 # https://huggingface.co/docs/transformers/main/main_classes/deepspeed
 
 # keeping the same format as json for consistency, except it uses lower case for true/false

docs/source/ja/testing.md

@@ -904,7 +904,7 @@ RUN_SLOW=1 pytest tests
 
 
 ```python no-style
-@parameteriz ed.expand(...)
+@parameterized.expand(...)
 @slow
 def test_integration_foo():
 ```