[hackers] [libzahl] Fix small error in solution for [13] The totient || Mattias Andrée

[git]

commit dd753f78b0c39d86a4cccca08996df303762e532
Author:     Mattias Andrée <maand...@kth.se>
AuthorDate: Thu Jul 28 20:24:46 2016 +0200
Commit:     Mattias Andrée <maand...@kth.se>
CommitDate: Thu Jul 28 20:24:46 2016 +0200

    Fix small error in solution for [13] The totient
    
    Signed-off-by: Mattias Andrée <maand...@kth.se>

diff --git a/doc/exercises.tex b/doc/exercises.tex
index 4af53e9..ebf8e91 100644
--- a/doc/exercises.tex
+++ b/doc/exercises.tex
@@ -668,7 +668,7 @@ of \texttt{b} with its absolute value.
 
 \noindent
 So, if we set $a = n$ and $b = 1$, then we iterate
-of all integers $p$, $2 \le p < n$. For which $p$
+of all integers $p$, $2 \le p \le n$. For which $p$
 that is prime, we set $a \gets a \cdot (p - 1)$ and
 $b \gets b \cdot p$. After the iteration, $b | a$,
 and $\varphi(n) = \frac{a}{b}$.