drm/xe: Fix case for asserts in documentation

The rendered html documentation for "Xe ASSERTs" doesn't look nice with
the mixed caps and gives the impression it was a typo. Use Title Case
Style.

Reviewed-by: Michal Wajdeczko <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]
Signed-off-by: Lucas De Marchi <[e-mail]>

drivers/gpu/drm/xe/xe_assert.h

···
 #include "xe_step.h"
 
 /**
- * DOC: Xe ASSERTs
+ * DOC: Xe Asserts
  *
  * While Xe driver aims to be simpler than legacy i915 driver it is still
  * complex enough that some changes introduced while adding new functionality
···
  * (&CONFIG_DRM_XE_DEBUG must be enabled) and cannot be used in expressions
  * or as a condition.
  *
- * See `Xe ASSERTs`_ for general usage guidelines.
+ * See `Xe Asserts`_ for general usage guidelines.
  */
 #define xe_assert(xe, condition) xe_assert_msg((xe), condition, "")
 #define xe_assert_msg(xe, condition, msg, arg...) ({						\
···
  * (&CONFIG_DRM_XE_DEBUG must be enabled) and cannot be used in expressions
  * or as a condition.
  *
- * See `Xe ASSERTs`_ for general usage guidelines.
+ * See `Xe Asserts`_ for general usage guidelines.
  */
 #define xe_tile_assert(tile, condition) xe_tile_assert_msg((tile), condition, "")
 #define xe_tile_assert_msg(tile, condition, msg, arg...) ({					\
···
  * (&CONFIG_DRM_XE_DEBUG must be enabled) and cannot be used in expressions
  * or as a condition.
  *
- * See `Xe ASSERTs`_ for general usage guidelines.
+ * See `Xe Asserts`_ for general usage guidelines.
  */
 #define xe_gt_assert(gt, condition) xe_gt_assert_msg((gt), condition, "")
 #define xe_gt_assert_msg(gt, condition, msg, arg...) ({						\

drivers/gpu/drm/xe/xe_gt_sriov_pf_helpers.h

···
  * is within a range of supported VF numbers (up to maximum number of VFs that
  * driver can support, including VF0 that represents the PF itself).
  *
- * Note: Effective only on debug builds. See `Xe ASSERTs`_ for more information.
+ * Note: Effective only on debug builds. See `Xe Asserts`_ for more information.
  */
 #define xe_gt_sriov_pf_assert_vfid(gt, vfid)	xe_sriov_pf_assert_vfid(gt_to_xe(gt), (vfid))
 

drivers/gpu/drm/xe/xe_sriov_pf_helpers.h

···
  * is within a range of supported VF numbers (up to maximum number of VFs that
  * driver can support, including VF0 that represents the PF itself).
  *
- * Note: Effective only on debug builds. See `Xe ASSERTs`_ for more information.
+ * Note: Effective only on debug builds. See `Xe Asserts`_ for more information.
  */
 #define xe_sriov_pf_assert_vfid(xe, vfid) \
 	xe_assert((xe), (vfid) <= xe_sriov_pf_get_totalvfs(xe))