remove trailing space

sec-pairings.tex

@@ -45,7 +45,7 @@ In the aforementioned chapter, we also rely on the following assumption, which g
   \label{de:SDL} \index{Pairings!SDL}
   In bilinear groups $\bigl(\GG,\Gh,\GT^{}\bigr)$  of  prime order $p$,  the \emph {Symmetric  Discrete Logarithm} ($\SDL$) problem  consists in, given
   $\bigl(g,\hat{g},g^a_{},\hat{g}^a_{}\bigr) \in \bigl(\GG \times \Gh\bigr)^2_{}$
-  where $a \sample \ZZ_p^{}$, computing $a \in \ZZ_p^{}$. 
+  where $a \sample \ZZ_p^{}$, computing $a \in \ZZ_p^{}$.
 \end{definition}
 
 This assumption is still a static and non-interactive assumption.