packaging: Try to clarify some sections in the packaging steps

[EbonJaeger]

Description

Clarify and help unify the wording across sections of the updating a package and new package articles.

Ref https://github.com/getsolus/help-center-docs/issues/437

Signed-off-by: Evan Maddock maddock.evan@vivaldi.net

Submitter Checklist

• [ ] Squashed commits with git rebase -i (if needed)