fix spacing

papers/icfp2021/queue-spec.tex

@@ -102,7 +102,7 @@ $\elemList$.
 %
 We may give a weaker specification by guaranteeing only that all of the
 elements stored in the queue satisfy some predicate~$P$.
-
+%
 \[\begin{array}{lcr}
 
 %  \hoareV
@@ -202,7 +202,7 @@ transferring subjective resources from a sender to a receiver.
 %    et comment transférer une vue permet de transférer une ressource?
 To reflect this,
 the representation predicate now takes more parameters:
-
+%
 \[
   \isQueue \tview \hview \elemViewList
 \]