Update usage docs section on creating web archives

[tw4l]

Fixes #898

Description

Updates the Usage documentation on creating web archives to:

• Drop mention of Webrecorder.io
• Add ArchiveWeb.page
• Add Browsertrix and Browsertrix Crawler

Motivation and Context

Naming a service that no longer exists under that name and shares our brand identity is probably confusing to users! So let's fix that.

Types of changes

• Replay fix (fixes a replay specific issue)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My change is a change to the documentation.
• I have updated the documentation accordingly.
• I have added or updated tests to cover my changes.
• All new and existing tests passed.

[Shrinks99]

Great! Thanks for updating this. We still reference our archiving tools as "Webrecorder" in the PYWB section, might be worth changing that language too?

The core recording functionality in Webrecorder is also part of pywb.

[tw4l]

Great! Thanks for updating this. We still reference our archiving tools as "Webrecorder" in the PYWB section, might be worth changing that language to?

The core recording functionality in Webrecorder is also part of pywb.

Nice catch! Changed :)

[Shrinks99]

Looks great!