[DOCS] Code block update for 23.0 (#18451)

* code-block-1

* Update Convert_Model_From_Paddle.md

* code-block force

* fix

* fix-2

* Update troubleshooting-steps.md

* code-block-2

* Update README.md

samples/c/hello_nv12_input_classification/README.md

@@ -64,8 +64,8 @@ To run the sample, you need specify a model and image:
 
 The sample accepts an uncompressed image in the NV12 color format. To run the sample, you need to convert your BGR/RGB image to NV12. To do this, you can use one of the widely available tools such as FFmpeg\* or GStreamer\*. The following command shows how to convert an ordinary image into an uncompressed NV12 image using FFmpeg:
 
-.. code-block:: bash
-
+.. code-block:: sh
+   
    ffmpeg -i cat.jpg -pix_fmt nv12 cat.yuv
 
 .. note::

samples/cpp/benchmark_app/README.md

@@ -153,7 +153,8 @@ Running the application with the ``-h`` or ``--help`` option yields the followin
 
 .. scrollbox::
 
-   .. code-block::
+   .. code-block:: sh
+      :force:
 
       [Step 1/11] Parsing and validating input arguments
       [ INFO ] Parsing input parameters

samples/cpp/hello_nv12_input_classification/README.md

@@ -68,7 +68,7 @@ To run the sample, you need to specify a model and image:
 
 The sample accepts an uncompressed image in the NV12 color format. To run the sample, you need to convert your BGR/RGB image to NV12. To do this, you can use one of the widely available tools such as FFmpeg\* or GStreamer\*. The following command shows how to convert an ordinary image into an uncompressed NV12 image using FFmpeg:
 
-.. code-block:: bash
+.. code-block:: sh
    
    ffmpeg -i cat.jpg -pix_fmt nv12 car.yuv
 

samples/python/speech_sample/README.md

@@ -108,7 +108,7 @@ Running
 
 Run the application with the ``-h`` option to see the usage message:
 
-.. code-block:: bash
+.. code-block:: sh
    
    python speech_sample.py -h