media: docs: vidioc-g-ext-ctrls.rst: Update p_s32 and p_s64 types

The pointer types of p_s32 and p_s64 in v4l2_ext_control has been
updated, match the change in documentation.
Signed-off-by: Daniel Lundberg Pedersen <dlp@qtec.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst

@@ -185,12 +185,12 @@ still cause this situation.
       - ``p_u32``
       - A pointer to a matrix control of unsigned 32-bit values. Valid if
 	this control is of type ``V4L2_CTRL_TYPE_U32``.
-    * - __u32 *
+    * - __s32 *
       - ``p_s32``
       - A pointer to a matrix control of signed 32-bit values. Valid if
         this control is of type ``V4L2_CTRL_TYPE_INTEGER`` and
         ``V4L2_CTRL_FLAG_HAS_PAYLOAD`` is set.
-    * - __u32 *
+    * - __s64 *
       - ``p_s64``
       - A pointer to a matrix control of signed 64-bit values. Valid if
         this control is of type ``V4L2_CTRL_TYPE_INTEGER64`` and