Changing ggtitle function to use labs arg

[sstevens2]

This consistently uses the labs() function's arguments instead of mixing labs() and ggtitle()

This was also changed in the r-socialsci lesson - datacarpentry/r-socialsci#99

[github-actions]

Thank you!

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Rendered Changes

🔍 Inspect the changes: https://github.com/datacarpentry/genomics-r-intro/compare/md-outputs..md-outputs-PR-246

The following changes were observed in the rendered markdown documents:

 06-data-visualization.md |  10 +++++-----
 depth.pdf                | Bin 45066 -> 45066 bytes
 md5sum.txt               |   2 +-
 3 files changed, 6 insertions(+), 6 deletions(-)

What does this mean?

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 2023-12-05 16:27:09 +0000

[naupaka]

Awesome, thanks!