Feat/functions-cleanup

[cjfullerton]

Cleanup on the functions lesson. Fixes typos, some errors in MATLAB code examples, minor rewording, and MATLAB output for new data.

[github-actions]

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If you have files that automatically render output (e.g. R Markdown), then you should check for the following:

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Rendered Changes

🔍 Inspect the changes: https://github.com/UoMResearchIT/matlab-novice/compare/md-outputs..md-outputs-PR-30

The following changes were observed in the rendered markdown documents:

 01-intro.md        | 28 +++++++++---------
 02-arrays.md       | 18 ++++++------
 03-loading_data.md | 14 ++++-----
 04-plotting.md     | 20 ++++++-------
 05-scripts.md      |  8 +++---
 06-func.md         | 84 ++++++++++++++++++++++++++----------------------------
 md5sum.txt         | 12 ++++----
 7 files changed, 91 insertions(+), 93 deletions(-)

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If you have source files that require output and figures to be generated (e.g. R Markdown), then it is important to make sure the generated figures and output are reproducible.

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⏱️ Updated at 2023-11-11 00:27:13 +0000

[fherreazcue]

I made a couple of changes, and realised we were not consistent with use of quotes in objectives, questions and keypoints... did not seem correct to use them, so i deleted them all...
Feel free to merge.