Avoid a cramped LaTeX table column in our own document

This is for the table of the Websupport.get_data() auto-documentation.

Somethink similar perhaps \setlength{\tymin}{1.5cm} at least could be a
global default; the only reason we have not changed it yet is that
perhaps some tables in user projects use really short contents such as
letter.

(what we would want to avoid is narrow columns allowed by hyphenation of
single words; maybe some thinking needed here as \sphinxAtStartPar
renders this hyphenation possible but perhaps even upstream LaTeX has
now made hyphenation of single words work in table cells).

doc/conf.py

@@ -70,6 +70,7 @@ latex_elements = {
 \DeclareUnicodeCharacter{229E}{\ensuremath{\boxplus}}
 \setcounter{tocdepth}{3}%    depth of what main TOC shows (3=subsubsection)
 \setcounter{secnumdepth}{1}% depth of section numbering
+\setlength{\tymin}{2cm}%     avoid too cramped table columns
 ''',
     # fix missing index entry due to RTD doing only once pdflatex after makeindex
     'printindex': r'''