doxygen: use valid paper type
The a4wide paper type is not valid
according to the Doxygen listing of
valid values.
@@ -1672,7 +1672,7 @@ COMPACT_LATEX = YES
# The default value is: a4.
# This tag requires that the tag GENERATE_LATEX is set to YES.
-PAPER_TYPE = a4wide
+PAPER_TYPE = a4
# The EXTRA_PACKAGES tag can be used to specify one or more LaTeX package names
# that should be included in the LaTeX output. The package can be specified just
