Fixed typo, remove extra jpeg

templates/tex/latex_sphinx_base.tplx

@@ -340,7 +340,7 b' Note: For best display, use latex syntax highlighting. =))'
 ((* macro iff_figure(output, true_content, false_content) -*))
     ((*- set is_figure = false -*))
     ((*- for type in output | filter_data_type -*))
-        ((*- if type in ['pdf', 'svg', 'png', 'jpeg','html','jpeg']*))
+        ((*- if type in ['pdf', 'svg', 'png', 'jpeg','html']*))
             ((*- set is_figure = true -*))
         ((*- endif -*))
     ((*- endfor -*))