doc: Update '--show' example to use '@' syntax.

* doc/guix.texi (Invoking guix package): Use '@' syntax in --show
example.
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Ludovic Courtès 2016-08-30 10:20:02 +02:00
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@ -1718,9 +1718,9 @@ version: 3.3.5
You may also specify the full name of a package to only get details about a You may also specify the full name of a package to only get details about a
specific version of it: specific version of it:
@example @example
$ guix package --show=python-3.3.5 | recsel -p name,version $ guix package --show=python@@3.4 | recsel -p name,version
name: python name: python
version: 3.3.5 version: 3.4.3
@end example @end example