DOCS: Update QuickStartGuide.md

[amanda-butler-unity]

Fix typos to resolve user-reported bugs DOCATT-8623 and DOCATT-8603

Description

This PR fixes two typos to resolve two user-reported documentation bugs.

Testing status & QA

N/A - docs-only change

Overall Product Risks

Please rate the potential complexity and halo effect from low to high for the reviewers. Note down potential risks to specific Editor branches if any.

• Complexity: Low
• Halo Effect: Low

Comments to reviewers

N/a

Checklist

Before review:

• Changelog entry added.
  • Explains the change in Changed, Fixed, Added sections.
  • For API change contains an example snippet and/or migration example.
  • JIRA ticket linked, example (case %%). If it is a private issue, just add the case ID without a link.
  • Jira port for the next release set as "Resolved".
• Tests added/changed, if applicable.
  • Functional tests Area_CanDoX, Area_CanDoX_EvenIfYIsTheCase, Area_WhenIDoX_AndYHappens_ThisIsTheResult.
  • Performance tests.
  • Integration tests.
• Docs for new/changed API's.
  • Xmldoc cross references are set correctly.
  • Added explanation how the API works.
  • Usage code examples added.
  • The manual is updated, if needed.

During merge:

• Commit message for squash-merge is prefixed with one of the list:
  • NEW: ___.
  • FIX: ___.
  • DOCS: ___.
  • CHANGE: ___.
  • RELEASE: 1.1.0-preview.3.

After merge:

• Create forward/backward port if needed. If you are blocked from creating a forward port now please add a task to ISX-1444.

[codecov-github-com]

Codecov Report

All modified and coverable lines are covered by tests ✅

@@           Coverage Diff            @@
##           develop    #2182   +/-   ##
========================================
  Coverage    65.44%   65.44%           
========================================
  Files          367      367           
  Lines        53505    53505           
========================================
  Hits         35019    35019           
  Misses       18486    18486           

Flag	Coverage Δ
linux_2021.3_project	70.41% <ø> (ø)
linux_2022.3_project	65.27% <ø> (ø)
linux_6000.0_project	65.35% <ø> (+<0.01%)	⬆️
linux_6000.1_project	65.34% <ø> (ø)
linux_trunk_project	65.35% <ø> (ø)
mac_2021.3_pkg	5.41% <ø> (ø)
mac_2021.3_project	70.42% <ø> (ø)
mac_2022.3_pkg	5.19% <ø> (ø)
mac_2022.3_project	65.29% <ø> (ø)
mac_6000.0_pkg	5.20% <ø> (ø)
mac_6000.0_project	65.37% <ø> (ø)
mac_6000.1_pkg	5.20% <ø> (ø)
mac_6000.1_project	65.37% <ø> (ø)
mac_trunk_pkg	5.20% <ø> (ø)
mac_trunk_project	65.36% <ø> (ø)
win_2021.3_pkg	5.42% <ø> (ø)
win_2021.3_project	70.49% <ø> (ø)
win_2022.3_pkg	5.20% <ø> (ø)
win_2022.3_project	65.37% <ø> (ø)
win_6000.0_pkg	5.20% <ø> (ø)
win_6000.0_project	65.44% <ø> (+<0.01%)	⬆️
win_6000.1_pkg	5.20% <ø> (ø)
win_6000.1_project	65.45% <ø> (ø)
win_trunk_pkg	5.20% <ø> (ø)
win_trunk_project	65.44% <ø> (-0.01%)	⬇️

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