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: 23c61b4599c4 ("drm/amd: Fix Kconfig indentation")
Fixes: 4562236b3bc0 ("drm/amd/dc: Add dc display driver (v2)")
Signed-off-by: Randy Dunlap <[e-mail]>
Cc: Harry Wentland <[e-mail]>
Cc: Alex Deucher <[e-mail]>
Cc: Krzysztof Kozlowski <[e-mail]>
Reviewed-by: Harry Wentland <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

drivers/gpu/drm/amd/display/Kconfig

···
 	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.
 
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