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 61.10%. Comparing base (2f1f813) to head (2e59733).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5389      +/-   ##
==========================================
+ Coverage   61.08%   61.10%   +0.01%     
==========================================
  Files         793      793              
  Lines       51156    51156              
==========================================
+ Hits        31251    31257       +6     
+ Misses      17033    17027       -6     
  Partials     2872     2872              

Flag	Coverage Δ
unittests-datacatalog	69.31% <ø> (ø)
unittests-flyteadmin	58.90% <ø> (+0.04%)	⬆️
unittests-flytecopilot	17.79% <ø> (ø)
unittests-flytectl	68.31% <ø> (ø)
unittests-flyteidl	79.30% <ø> (ø)
unittests-flyteplugins	61.94% <ø> (ø)
unittests-flytepropeller	57.32% <ø> (ø)
unittests-flytestdlib	65.75% <ø> (ø)

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