Minor updates to Package Review Process
* Do not link separately
to the Packaging Guidelines and Naming Guidelines.
These the latter is a section of the former,
a single link is enough.
* Specify more clearly
that the requirement to submit a package
is membership in the 'packager' group.
* Refer to various pagure.io repositories by name
instead of just saying "Pagure".
* Formatting
* Fix erroneous fedpkg command