Fix grammar issue in Hello World tutorial

[NessDan]

Description

This updates docs/tutorial/02-hello-world.mdx (the Hello World tutorial page) to fix a minor grammar issue in one of the sentences.

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• Targeted PR against master branch
• Linked to Github issue with discussion and accepted design OR link to spec that describes this work
• Code follows the standards mentioned here
• Updated relevant documentation
• Re-reviewed Files changed in the Github PR explorer
• Added appropriate labels

[turbolent]

Thank you!

[codecov-commenter]

Codecov Report

Merging #1231 (05a51ee) into master (5090f51) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1231   +/-   ##
=======================================
  Coverage   77.41%   77.41%           
=======================================
  Files         273      273           
  Lines       34823    34823           
=======================================
  Hits        26957    26957           
  Misses       6791     6791           
  Partials     1075     1075           

Flag	Coverage Δ
unittests	77.41% <ø> (ø)

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[NessDan]

Thank you!

My pleasure! Thanks for a fun, well-made tutorial 😉