[manual] Italics mistake in section 2.7

[AlexDikelsky]

The italics for the first 0 don't match the second. Also, maybe the 2 shouldn't be italicized for step=2pt
This is in section 2.7 on page 34, using version:

The TikZ and PGF Packages 
Manual for version 3.1.4b
https://github.com/pgf-tikz/pgf
Till Tantau∗
Institut für Theoretische Informatik
Universität zu Lübeck
August 3, 2019

[hmenke]

The problem is in \pgfmanual@pretty@pgfkeys@collectvalue

pgf/tex/latex/pgf/doc/pgfmanual.prettyprinter.code.tex

Lines 1030 to 1061 in 1302de8

	\def\pgfmanual@pretty@pgfkeys@collectvalue#1{%
	\def\pgfmanual@loc@TMPb{#1}%
	\let\pgfmanual@pretty@pgfkeys@collectvalue@next=\pgfmanual@pretty@pgfkeys@collectvalue
	\ifx\pgfmanual@loc@TMPb\pgfmanual@EOI
	% the key value is empty.
	%\expandafter\pgfmanual@pretty@pgfkeys@processvalue\expandafter{\the\toks0 }%
	\let\pgfmanual@pretty@pgfkeys@collectvalue@next=\relax
	\else
	\def\pgfmanual@pretty@isconsumed{0}%
	\if\pgfmanual@pretty@pgfkeys@collectvalue@hasconsumedspaces0%
	\ifnum13=\catcode`#1
	% we found a white space (space, TAB or NL)
	#1%
	\def\pgfmanual@pretty@isconsumed{1}%
	\else
	\ifnum10=\catcode`#1
	% another white space... I thought they'd have
	% catcode 13. doesn't matter.
	\def\pgfmanual@pretty@isconsumed{1}%
	#1%
	\fi
	\fi
	\fi
	\if\pgfmanual@pretty@isconsumed0%
	\def\pgfmanualprettyprinterhandlecollectedargsVtwo##1##2{\pgfmanual@pretty@pgfkeys@processvalue{##1}}% the braces will be handled separately.
	\def\pgfmanual@pretty@pgfkeys@collectvalue@next{%
	\pgfmanualprettyprintercollectupto,{\afterpgfmanual@pretty@collectargs@finish@value}#1%
	}%
	\fi
	\fi
	\pgfmanual@pretty@pgfkeys@collectvalue@next
	}%

in particular this line:

pgf/tex/latex/pgf/doc/pgfmanual.prettyprinter.code.tex

Line 1056 in 1302de8

\pgfmanualprettyprintercollectupto,{\afterpgfmanual@pretty@collectargs@finish@value}#1%

It just collects everything up to the next comma, which in this case, where there is only a single key, is inside the point (0,0).