add pairedtag diagram and fix snm3c slug

[rsc3]

Description

Give your PR a concise yet descriptive title.
Please explain the changes you made here.

Added the pairedtag diagram from the lucidchart and fixed an error in the snm3c methods slug position

---

Checklist

If you can answer "yes" to the following items, please add a checkmark next to the appropriate checklist item(s) and notify our WARP team by tagging @broadinstitute/warp-admins in a comment on this PR.

• Did you add inputs, outputs, or tasks to a workflow?
• Did you modify, delete or move: file paths, file names, input names, output names, or task names?
• If you made a changelog update, did you update the pipeline version number?

[github-actions]

Remember to squash merge!

[github-actions]

🔍Version Validation Results:

Comparing versions and changelogs for pipelines that differ from the versions on 'origin/staging':
All WDLs and changelog files appear to be valid for this release.

[github-actions]

🔍Changelog Validation Results:

basename: missing operand
Try 'basename --help' for more information.
Comparing changelogs for pipelines that differ from the versions on 'origin/develop':
All changelog files are valid for this release.

[github-actions]

Remember to squash merge!

[github-actions]

🔍Version Validation Results:

Comparing versions and changelogs for pipelines that differ from the versions on 'origin/staging':
All WDLs and changelog files appear to be valid for this release.

[github-actions]

🔍Changelog Validation Results:

basename: missing operand
Try 'basename --help' for more information.
Comparing changelogs for pipelines that differ from the versions on 'origin/develop':
All changelog files are valid for this release.

[rsc3]

How to run docusaurus to preview the website:

• first you need yarn, which is installed with npm mac install
• then you need to build the local website in the root of the docs directory warp/website
  • yarn --cwd=website install
  • yarn --cwd=website start
  • the local website should popup in your default browser

[rsc3]

You can see a github preview quickly just looking at the README:
https://github.com/broadinstitute/warp/tree/rc-pd-2837/website/docs/Pipelines/PairedTag_Pipeline

[github-actions]

Remember to squash merge!

[github-actions]

🔍Version Validation Results:

Comparing versions and changelogs for pipelines that differ from the versions on 'origin/staging':
All WDLs and changelog files appear to be valid for this release.

[github-actions]

🔍Changelog Validation Results:

basename: missing operand
Try 'basename --help' for more information.
Comparing changelogs for pipelines that differ from the versions on 'origin/develop':
All changelog files are valid for this release.

[github-actions]

Remember to squash merge!

[github-actions]

🔍Changelog Validation Results:

basename: missing operand
Try 'basename --help' for more information.
Comparing changelogs for pipelines that differ from the versions on 'origin/develop':
All changelog files are valid for this release.

[github-actions]

🔍Version Validation Results:

Comparing versions and changelogs for pipelines that differ from the versions on 'origin/staging':
All WDLs and changelog files appear to be valid for this release.

[github-actions]

Remember to squash merge!

[github-actions]

🔍Version Validation Results:

Comparing versions and changelogs for pipelines that differ from the versions on 'origin/staging':
All WDLs and changelog files appear to be valid for this release.

[github-actions]

🔍Changelog Validation Results:

basename: missing operand
Try 'basename --help' for more information.
Comparing changelogs for pipelines that differ from the versions on 'origin/develop':
All changelog files are valid for this release.