drm: amd/display: fix Kconfig help text

Fix help text: indent one tab + 2 spaces; end a sentence with a
period; and collapse short lines of text to one line.

Fixes: 23c61b45 ("drm/amd: Fix Kconfig indentation")
Fixes: 4562236b ("drm/amd/dc: Add dc display driver (v2)")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/Kconfig

@@ -21,16 +21,12 @@ config DRM_AMD_DC_HDCP
 	bool "Enable HDCP support in DC"
 	depends on DRM_AMD_DC
 	help
-	 Choose this option
-	 if you want to support
-	 HDCP authentication
+	  Choose this option if you want to support HDCP authentication.
 
 config DEBUG_KERNEL_DC
 	bool "Enable kgdb break in DC"
 	depends on DRM_AMD_DC
 	help
-	  Choose this option
-	  if you want to hit
-	  kdgb_break in assert.
+	  Choose this option if you want to hit kdgb_break in assert.
 
 endmenu