manual: Do not indent paragraphs

Indenting paragraphs is so 1970, and is rather noisy and confusing
when short paragraphs appear near other indented text.  Just see
(info "(texinfo)@paragraphindent") for an example -- indentation
just flutters all over the place.

Author: tarsius

docs/epkg.org

@@ -10,11 +10,11 @@
 #+subtitle: for version 4.1.0
 
 #+setupfile: .orgconfig
+#+texinfo: @paragraphindent none
 
 With Epkg you can browse the Emacsmirror package database using an
 interface similar to that of ~package.el~.
 
-#+texinfo: @noindent
 This manual is for Epkg version 4.1.0.
 
 #+texinfo: @insertcopying

docs/epkg.texi

@@ -44,10 +44,11 @@ General Public License for more details.
 @node Top
 @top Epkg User Manual
 
+@paragraphindent none
+
 With Epkg you can browse the Emacsmirror package database using an
 interface similar to that of @code{package.el}.
 
-@noindent
 This manual is for Epkg version 4.1.0.
 
 @insertcopying