Docs: fix mistakes in New Project docs

[adamjstewart]

What does this PR do?

This PR fixes a number of typos/mistakes I noticed while reading through the New Project docs.

Does your PR introduce any breaking changes? If yes, please list them.

Nope

Before submitting

• Was this discussed/approved via a GitHub issue? (not for typos and docs)
• Did you read the contributor guideline, Pull Request section?
• Did you make sure your PR does only one thing, instead of bundling different changes together?
• Did you make sure to update the documentation with your changes? (if necessary)
• Did you write any new necessary tests? (not for typos and docs)
• Did you verify new and existing tests pass locally with your changes?
• Did you list all the breaking changes introduced by this pull request?
• Did you update the CHANGELOG? (not for typos, docs, test updates, or internal minor changes/refactorings)

PR review

Anyone in the community is welcome to review the PR.
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Did you have fun?

Make sure you had fun coding 🙃

[adamjstewart]

Thanks @rohitgr7, your changes look good to me.

[codecov]

Codecov Report

Merging #10137 (9059502) into master (c9bc10c) will decrease coverage by 4%.
The diff coverage is n/a.

❗ Current head 9059502 differs from pull request most recent head 301a1bf. Consider uploading reports for the commit 301a1bf to get more accurate results

@@           Coverage Diff            @@
##           master   #10137    +/-   ##
========================================
- Coverage      92%      89%    -4%     
========================================
  Files         182      182            
  Lines       16111    16149    +38     
========================================
- Hits        14894    14323   -571     
- Misses       1217     1826   +609     

[awaelchli]

<3

[tchaton]

LGTM !

[kaushikb11]

Congrats @adamjstewart on your fist contribution! Looking forward to more :)