minor: change jax integration for sliding and patching in gpu.rst

Since sliding and patching use sliding_window_view that is currently
not available in JAX, we will not support them in the jax backend
for the moment.

Author: mrava87

docs/source/gpu.rst

@@ -277,23 +277,23 @@ Signal processing:
    * - :class:`pylops.signalprocessing.Sliding1D`
      - |:white_check_mark:|
      - |:white_check_mark:|
-     - |:white_check_mark:|
+     - |:red_circle:|
    * - :class:`pylops.signalprocessing.Sliding2D`
      - |:white_check_mark:|
      - |:white_check_mark:|
-     - |:white_check_mark:|
+     - |:red_circle:|
    * - :class:`pylops.signalprocessing.Sliding3D`
      - |:white_check_mark:|
      - |:white_check_mark:|
-     - |:white_check_mark:|
+     - |:red_circle:|
    * - :class:`pylops.signalprocessing.Patch2D`
      - |:white_check_mark:|
      - |:white_check_mark:|
-     - |:white_check_mark:|
+     - |:red_circle:|
    * - :class:`pylops.signalprocessing.Patch3D`
      - |:white_check_mark:|
      - |:white_check_mark:|
-     - |:white_check_mark:|
+     - |:red_circle:|
    * - :class:`pylops.signalprocessing.Fredholm1`
      - |:white_check_mark:|
      - |:white_check_mark:|