Merge pull request #2 from mpelleau/master

fix typos

exercice.dtx

@@ -163,7 +163,7 @@ Running "make install" installs the files in the local TeX tree.
 
 % \subsection{Class Options}
 % \label{sec:options}
-% Options arre passed to the \textsl{exercise} package.
+% Options are passed to the \textsl{exercise} package.
 % The package uses three additional options: |exam|; |versionB|; |nograde|. \\
 % The option |exam| indicates that the document is an examination paper, and not a correction.
 %    \begin{macrocode}
@@ -505,7 +505,7 @@ Running "make install" installs the files in the local TeX tree.
           \fi
         }
 %    \end{macrocode}
-% Let define the light foratting for corrections.
+% Let define the light formatting for corrections.
 %    \begin{macrocode}           
 \else
 \pretitle{\begin{center}\LARGE}