Fix some nits in workflow lifecycle docs.

[dansola]

Why are the changes needed?

Fixes some grammar, broken links and punctuation in the workflow lifecycle page.

What changes were proposed in this pull request?

Small nits

How was this patch tested?

N/A

Setup process

Screenshots

Check all the applicable boxes

• I updated the documentation accordingly.
• All new and existing tests passed.
• All commits are signed-off.

Related PRs

Docs link

Page: https://docs.flyte.org/en/latest/concepts/workflow_lifecycle.html#understand-the-lifecycle-of-a-flyte-workflow

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 60.99%. Comparing base (37fe0a3) to head (6777259).
Report is 119 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #5389   +/-   ##
=======================================
  Coverage   60.99%   60.99%           
=======================================
  Files         794      794           
  Lines       51475    51475           
=======================================
  Hits        31398    31398           
  Misses      17185    17185           
  Partials     2892     2892           

Flag	Coverage Δ
unittests-datacatalog	69.31% <ø> (ø)
unittests-flyteadmin	58.73% <ø> (ø)
unittests-flytecopilot	17.79% <ø> (ø)
unittests-flytectl	68.03% <ø> (ø)
unittests-flyteidl	79.04% <ø> (ø)
unittests-flyteplugins	61.85% <ø> (ø)
unittests-flytepropeller	57.30% <ø> (ø)
unittests-flytestdlib	65.59% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.