drm/i915: kerneldoc for intel_fifo_underrun.c

v2: Fix spelling fail.

Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
diff --git a/Documentation/DocBook/drm.tmpl b/Documentation/DocBook/drm.tmpl
index d7cfc98..f6a9d7b 100644
--- a/Documentation/DocBook/drm.tmpl
+++ b/Documentation/DocBook/drm.tmpl
@@ -3831,6 +3831,11 @@
 !Fdrivers/gpu/drm/i915/i915_gem.c i915_gem_track_fb
       </sect2>
       <sect2>
+        <title>Display FIFO Underrun Reporting</title>
+!Pdrivers/gpu/drm/i915/intel_fifo_underrun.c fifo underrun handling
+!Idrivers/gpu/drm/i915/intel_fifo_underrun.c
+      </sect2>
+      <sect2>
         <title>Plane Configuration</title>
         <para>
 	  This section covers plane configuration and composition with the