Remove X<L< form in Update operators.rakudoc

- Relates to Raku#280 in Raku/doc-website.
- A search for `X<L<` in all documents, it only occurs once - here
- Having markup codes inside other markup codes, as here, should be valid, and it will be in the next iteration of the Renderer. But that might take some time. 
- Better in the short term to create a workaround

doc/Language/operators.rakudoc

@@ -686,7 +686,7 @@ L<hash|/routine/hash> routine instead:
 
 =head2 circumfix C«[ ]»
 
-The X<L<Array|/type/Array> constructor|Circumfix operators,Array constructor> returns an itemized L<Array|/type/Array> that does not flatten
+The X<Array constructor|Circumfix operators,Array constructor> returns an itemized L<Array|/type/Array> that does not flatten
 in list context. Check this:
 
     say .raku for [3,2,[1,0]]; # OUTPUT: «3␤2␤$[1, 0]␤»