remove double n's from "can"

src/HsH-classes.dtx

@@ -344,7 +344,7 @@ http://www.latex-project.org/lppl.txt
 %
 %   \DescribeMacro{\includeHsHlogohere}
 %   The macro \cmd{\includeHsHlogohere\oarg{width}} is used by |\maketitle| to produce
-%   the logo. But if you want it elsewhere, you cann call this macro yourself.
+%   the logo. But if you want it elsewhere, you can call this macro yourself.
 %
 %
 % \subsection{Commands for document writing}
@@ -872,7 +872,7 @@ http://www.latex-project.org/lppl.txt
 }
 %    \end{macrocode}
 %
-%     Now we cann process the options for the |HsH| familiy.
+%     Now we can process the options for the |HsH| familiy.
 %    \begin{macrocode}
 \FamilyProcessOptions{HsH}\relax
 %    \end{macrocode}