docs: fix doc build error in SIL.rst

eeckstein · eeckstein · commit 2b96a913aa2f · 2021-03-07T09:56:28.000+01:00
diff --git a/docs/SIL.rst b/docs/SIL.rst
@@ -3621,7 +3621,7 @@ We require that ``%1`` and ``%0`` have the same type ignoring SILValueCategory.
 This instruction is only valid in functions in Ownership SSA form.
 
 end_lifetime
-``````````
+````````````
 
 ::
 
