(JP-3126) Clarify text in Jump docs

[dmggh]

Resolves JP-3126

Closes #

This PR clarifies the text in the ReadTheDocs for the arguments in the jump step, and corrects typos.

Checklist for maintainers

• added entry in CHANGES.rst within the relevant release section
• updated or added relevant tests
• updated relevant documentation
• added relevant milestone
• added relevant label(s)
• ran regression tests, post a link to the Jenkins job below.
  How to run regression tests on a PR
• Make sure the JIRA ticket is resolved properly

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: -0.60 ⚠️

Comparison is base (a6b8a78) 77.57% compared to head (d39306e) 76.97%.

❗ Current head d39306e differs from pull request most recent head c273d27. Consider uploading reports for the commit c273d27 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #7518      +/-   ##
==========================================
- Coverage   77.57%   76.97%   -0.60%     
==========================================
  Files         452      452              
  Lines       36207    36540     +333     
==========================================
+ Hits        28086    28127      +41     
- Misses       8121     8413     +292     

Flag	Coverage Δ		*Carryforward flag
nightly	77.56% <ø> (-0.02%)	⬇️	Carriedforward from ae47f34

*This pull request uses carry forward flags. Click here to find out more.

see 11 files with indirect coverage changes

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

☔ View full report in Codecov by Sentry.
📢 Do you have feedback about the report comment? Let us know in this issue.

[hbushouse]

Please fix the text in the description field above so that the tic boxes are handled correctly (no whitespace inside of [])

[hbushouse]

Updates look good and build correctly in docs.