Fix a markup.
This generated a ugly code, "P>".
diff --git a/Doc/lib/libcodecs.tex b/Doc/lib/libcodecs.tex
index b796766..6e0bc8d 100644
--- a/Doc/lib/libcodecs.tex
+++ b/Doc/lib/libcodecs.tex
@@ -1337,7 +1337,7 @@
              UTF-8 codec with BOM signature}
 \declaremodule{standard}{encodings.utf-8-sig}   % XXX utf_8_sig gives TeX errors
 \modulesynopsis{UTF-8 codec with BOM signature}
-\moduleauthor{Walter D\"orwald}
+\moduleauthor{Walter D\"orwald}{}
 
 \versionadded{2.5}