Small wording fixes to optional exercises

[anenadic]

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Rendered Changes

🔍 Inspect the changes: https://github.com/carpentries-incubator/python-intermediate-development/compare/md-outputs..md-outputs-PR-424

The following changes were observed in the rendered markdown documents:

 12-virtual-environments.md        |  8 ++----
 17-section1-optional-exercises.md | 55 ++++++++++++++++++++-------------------
 md5sum.txt                        |  4 +--
 3 files changed, 32 insertions(+), 35 deletions(-)

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⏱️ Updated at 2025-01-30 16:09:33 +0000

[bielsnohr]

Mostly sensible. Just a few nit-picks but otherwise good to go in.

[bielsnohr]

Suggested change

	Have a look at [some optional exercises](17-section1-optional-exercises.md).
	Have a look at [these optional exercises](17-section1-optional-exercises.md) if you have some extra time and want to further explore these concepts.

[bielsnohr]

Is the addition of "tool" to help those less familiar with the term? Otherwise, I don't think it is ever something I have referred to as "the command line tool". I would vote for just keep "command line" because that is how we have introduced it in the course already.

Suggested change

	## Exercise: Customise the command line tool
	## Exercise: Customise the command line

[bielsnohr]

Suggested change

	You can customise the command line tool or use alternatives to `bash`, such as:
	You can customise the command line or use alternatives to `bash`, such as:

[steve-crouch]

Thanks for these @anenadic !