docs: Update ibm_watsonx.ipynb (#20329)

avaliable -> available


    - **Description:** fixed typo
    - **Issue:** the issue # it fixes, if applicable
    - **Dependencies:** any dependencies required for this change
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docs/docs/integrations/llms/ibm_watsonx.ipynb

@@ -124,7 +124,7 @@
     "In this example, we’ll use the `project_id` and Dallas url.\n",
     "\n",
     "\n",
-    "You need to specify `model_id` that will be used for inferencing. All avaliable models you can find in [documentation](https://ibm.github.io/watsonx-ai-python-sdk/fm_model.html#ibm_watsonx_ai.foundation_models.utils.enums.ModelTypes)."
+    "You need to specify `model_id` that will be used for inferencing. All available models you can find in [documentation](https://ibm.github.io/watsonx-ai-python-sdk/fm_model.html#ibm_watsonx_ai.foundation_models.utils.enums.ModelTypes)."
    ]
   },
   {